
By Daniil Tkachev · Original research at dantweb.dev
Seventy years ago a hen's egg in Washington, Cairo and Bangkok was the same object it is today. That makes it one of the few honest yardsticks in economics. Price income, homes, cars and silver in eggs, and you can compare 1970 with 2025, or India with Norway, without exchange rates or inflation adjustments getting in the way. A new study, The World Priced in Eggs, does exactly that for 20 countries from 1950 to 2025, using FAO, World Bank, ILO, BIS, US Bureau of Labor Statistics and Eurostat data. Its findings cut through a lot of noise. Food got about four times cheaper relative to income. Factory goods got dramatically cheaper everywhere. Homes did not. Silver went nowhere for 70 years and is now at one of its most extreme readings on record. And the rich world stopped getting richer in eggs around 2005. The thesis is that the egg exposes the real dividing line in the global economy: things that can be made in a factory keep getting cheaper, while things tied to land and money do not, and today the second group is flashing the same warnings it showed before past crises.
Source: all figures and charts below come from the research report The World Priced in Eggs: Egg purchasing power, 20 countries, 1950–2025 (November 2026). The charts link to the report's full-size SVG versions.
Food became four times cheaper, fastest where people were poorest
In the median country, one month of average income bought 4,136 eggs around 1970, 12,069 around 2000 and 16,592 in 2024. That is as much a story of farm productivity as of income: industrial poultry, cheap feed grain and refrigerated logistics turned the egg from a luxury into the cheapest animal protein on earth.
The gains were largest where incomes started lowest. Between 1970 and 2024 egg purchasing power rose 25 times in Chile, 14 times in India and 11 times in Thailand, against 4.4 times in France and 2.4 times in the United States. China went from 640 eggs a month in 1991 to more than 12,000. The gap between the best- and worst-placed country fell from 64 times in 1970 to 27 times in 2024. But the order barely moved: Norway, the US, Britain and Western Europe stayed on top for the whole period, and India and Egypt stayed at the bottom.
Eggs one month of income buys, by country, 1950–2025. Source: The World Priced in Eggs (full-size SVG).The rich world's plateau
The most uncomfortable finding for advanced economies is that most of them peaked between 2003 and 2007 and are now below that level. Against its peak year, the United States stands at 22%, Greece at 53%, Japan at 56%, Germany at 59% and France at 62%. Three forces combined. Eggs got dearer: the US farm price per egg rose from $0.038 in 2000 to $0.22 in 2024, nearly six times, while income per head rose 2.3 times, with avian flu, the EU's battery-cage ban and feed spikes all playing a part. Income growth slowed after 2008. And crises cut deep: Greece lost almost half its egg purchasing power between 2006 and 2013.
Between 2020 and 2025 the squeeze sharpened. In the US the farm price of an egg rose 3.5 times while income rose 1.38 times. In most developing countries income won. The report's reading is that this kind of everyday squeeze "fuels political pressure more than it predicts recessions", which fits the voter anger over prices seen across rich democracies.
Factory goods: the great deflation
A compact family car got cheaper in months of income in every country in the data, without exception. In the US it fell from 15.2 months of average income in 1970 to 3.1 in 2024. In India it fell from 189 months to 37, in Poland from 115 months in 1990 to 14, and in China from 69 months in 2005 to 16.
The car is also the most equal measure in the study. Income measured in eggs still varies 27 times between countries, but the egg price of a car varies only about 6 times, and has for 50 years. A car is traded on world markets, so its price converges. Eggs, wages and land are local, so they do not. For anyone in e-commerce, that is the long-run engine behind cheaper goods: global supply chains, automation and competition, now led by Chinese factories, which the report says are still "exporting lower prices to the world".
How many eggs a compact family car costs, by country. Source: The World Priced in Eggs (full-size SVG).Homes are the one big thing that did not get cheaper
Measured in years of average income, a 100 m² home costs about the same as a generation ago, or more. France is the clearest case: 10.6 years in 1975 and 10.8 in 2024, through two property booms. Britain went from 5.2 to 7.9 years, Norway from 3.7 to 5.0 and Poland from 5.4 in 2005 to 9.3. Homes got cheaper only where a bubble burst or incomes outran everything: Japan from about 31 years to 17, Germany from 21 to 10, China from 44 in 2005 to 11.
The report's explanation is simple: "A car factory can double its output; a city cannot double its land." As incomes rose, buyers bid more for the same locations, so income gains were absorbed into land prices instead of making homes cheaper.
How many eggs a 100 m² home costs, by country. Solid lines are observed prices, dashed lines are chained from an index. Source: The World Priced in Eggs (full-size SVG).Silver: 70 years without a trend, and an extreme reading now
Average monthly income in the median country bought 2.2 kg of sterling silver in 1970 and 2.0 kg in 2024. In between it collapsed to 0.65 kg in 1980, rose to nearly 4 kg around 2000 and fell again in the 2011 and 2025 rallies. Unlike eggs or cars, silver isn't made cheaper by productivity. It behaves as a store of value whose price rises with money and wealth, which is why every country dips at the same moment in 1980.
The outlook is where silver matters. With silver averaging about $72 an ounce from January to October 2026, against $39.8 in 2025, the report estimates a month of median income will buy about 0.9 kg in 2026, the second-lowest reading on record. The only lower years cluster around 1979–83 and 2011–12, both moments of fear about money and debt. In both cases the silver price then fell and silver purchasing power recovered 2.5 to 3 times within about five years. The 2026 drop from a $92 peak in January to $57 by October has the same shape. As the report puts it: "Two cases are a pattern, not a law." For readers who follow bitcoin and gold as hedges, silver's history is a reminder that fear trades have tended to unwind once the panic about money fades.
Grams of sterling silver one month of income buys, by country (log scale). Source: The World Priced in Eggs (full-size SVG; also available in pounds per year).A working month priced in silver: 1900 versus today
Silver also allows a longer look back than the egg data, because until 1920 British money was itself made of sterling silver: every shilling contained 5.655 grams of it. Around 1900, roughly £100 a year, about £2 a week, was a good income for a skilled engineering worker in Britain. (An 1886 Board of Trade wage census put a fitter's average at 26 shillings a week, and rates rose from there.) £100 was 2,000 shillings, or about 11.3 kg of sterling silver a year, which is roughly 0.94 kg a month.
Now put that next to the report's numbers. A month of median income bought 2.2 kg of sterling silver in 1970, 2.0 kg in 2024, and an estimated 0.9 kg in 2026. Measured in the metal money used to be made of, a working month costs about what it did when a skilled British engineer earned £100 a year. The UK's own 2025 reading in the report, about 3.8 kg a month, is higher, but still within the same small range, while in eggs or cars the same month buys many times more than it did. The comparison is rough: a skilled worker's wage in 1900 is not the same thing as income per head today. But the direction is clear. The price of labour in money that cannot be printed has barely moved in 125 years. What changed is everything that labour can buy that factories and farms learned to make cheaply.
Four warning lights, and three scenarios
The report is careful about what this data can and cannot do: it cannot give a date for the next crisis. It can show where today's readings sit against their own history. Four stand out:
- Silver at a historic extreme, as above.
- Housing stretched in some countries. Mexico is at a record 12.1 years of income for 100 m², and Norway, the US, Britain and Chile are near their own highs. In this data set, a country's own housing peak has repeatedly come shortly before its crisis: Japan before 1990, the US in 2005, Greece in 2006, Russia in 2007, Brazil in 2012. China is the opposite case, already deflated to the cheapest level in its record.
- A food-price squeeze in rich countries, as eggs outpaced incomes in the US, Japan, Germany and France since 2020.
- The tailwind: cars kept getting cheaper in every country between 2014 and 2024, and India, Egypt, Thailand, Chile and Russia hit records in egg purchasing power in 2025.
From these, the report sets out three scenarios, explicitly as judgments rather than forecasts. Most likely for 2026–2028 is "an unwind and a cooling, not a collapse": the metals spike keeps deflating and growth slows where housing is stretched and debt is high. The global-crisis path requires several lights to turn red together, such as a sharp housing correction in a stretched market combined with high interest rates, or Chinese property deflation hitting commodity exporters. The third is a new prosperity wave in the 2030s led by India, Southeast Asia and Central Europe.
Where AI fits
The report's most interesting line for technology readers is about the rich world. A renewed rise in rich countries' purchasing power "would need a productivity wave, possibly from AI", and if one comes, "the first sign would be eggs per month climbing again in the US, Japan and Europe after twenty flat years". That gives a concrete test for the AI boom that is more useful than valuations or token counts. So far, the evidence of AI productivity is in company reports and benchmarks, not in household purchasing power. If AI does for services what factories did for cars, it should eventually show up in what an average month of income buys. Until it does, the egg says the rich world is still waiting.
What to watch
- Silver purchasing power: a rebound towards 1.8–2 kg a month would mean the fear trade has unwound, as after 1980 and 2011.
- Years of income for a home in the US, UK and Norway (2.3, 7.7 and 5.1 now): a turn down from these highs has preceded crises before; a flat plateau is the benign case.
- Eggs per month in the US, Japan and France (22%, 56% and 62% of peak): a rise would be the first sign of a rich-world productivity revival.
- Months of income for a car in India and Egypt (37 and 120): continued falls mean convergence is still working.
How far to trust it
The method is transparent and its limits are stated. Egg prices are farm-gate prices, not shop prices, which typically run 1.5 to 3 times higher; that shifts levels but not trends. Income is GNI per head, including children, not wages. Some housing and car anchors are rough, and level comparisons between countries are less reliable than trends within one. Every estimated value is labelled in the dataset, and corrections are declared rather than hidden. The full study, built with the open datavibes toolkit, includes the data sources, method notes and all seven charts, including the graduate pay and urban pay series: read the report.
The read
Priced in eggs, the last 70 years split cleanly in two. What can be manufactured and traded, food and factory goods, became far more affordable everywhere, and poorer countries closed half the gap. What is local and scarce, land and the stores of value people run to when they fear for their money, did not get cheaper at all, and both are now at stretched readings that have come before trouble in the past. The egg cannot say when. But it does suggest where to look: at housing in the stretched markets, at whether the silver panic keeps unwinding, and at whether AI ever makes the rich world's eggs-per-month line move again.
The engine: datavibes, and how to build your own study
Every number and chart in the egg report was produced by datavibes, an open, config-driven Python toolkit for building datasets, available on GitHub at github.com/dantweb/datavibes. Nothing in the study was edited by hand in a spreadsheet. The whole analysis is one declarative file that lists its sources, its processing steps, its schema and its outputs, and one command, datavibes run egg-purchasing-power, fetches the data, processes it and writes the CSV, the Excel workbook and all seven SVG charts with a shared timestamp.
That design is what makes the results checkable, which matters more than ever when so much "research" is generated in seconds:
- Provenance in the data. Every estimated value is labelled in its own column, as observed, index-chained or anchored, and every anchor carries its source and a confidence level.
- Corrections are declared, not hidden. Each unit fix or exclusion is a line in the configuration with its reason, printed as a warning on every run.
- Assumptions are parameters. Change one variable, such as the weight of an egg, and the entire study reruns with the new assumption.
- Tests. The egg study is covered by 41 automated tests that replay the pipeline on recorded data, so a code change that alters a result is caught.
Because a study is a declaration rather than a one-off script, extending it is mostly editing YAML. The building blocks written for this report, including sources for FAOSTAT, the World Bank, ILOSTAT, BIS, the US Bureau of Labor Statistics and Eurostat, index chaining, spreadsheet output, small-multiples charts and world maps, are reusable for any other dataset. The report suggests where to go next: price the world in rice, milk or wheat instead of eggs, add countries such as Nigeria, Indonesia or Vietnam, switch from farm-gate to shop prices, measure prices in hours of work, or turn the four warning lights into a tracker that recalculates every month.
Getting started takes a few commands:
git clone https://github.com/dantweb/datavibes
cd datavibes && pip install -e .
datavibes new my-study --category economy
datavibes validate my-study
datavibes run my-study
datavibes can be run from the command line or a scheduled job, or imported as a Python library. Its timestamped outputs are designed to be served directly by data products, including the dataset plugin of the VBWD platform. It is released under the Business Source License 1.1: free for research, evaluation and non-commercial work, and for production use by organisations with annual revenue below the value of one bitcoin. Anyone who wants to check the egg numbers, challenge an assumption or build their own yardstick can start at the datavibes repository on GitHub, then compare their results with the original report.
Written for Red Robot with AI assistance and human editing. Based on the research report The World Priced in Eggs (November 2026), with the 1900 wage comparison added from UK historical wage records and coinage standards, and the report itself built from FAOSTAT, World Bank, ILOSTAT, BIS, US BLS and Eurostat data. datavibes and the report share the same author. The scenarios described are the report's judgments, not forecasts or investment advice.
https://redrobot.online/2026/11/08/the-world-priced-in-eggs-food-got-four-times-cheaper-homes-never-did-silver-flashes-a-warning/









