As supermarkets and other stores set their prices on a quarterly to semi-annual basis with egg retailers, the current retail price does not yet reflect the steep rise in feed prices and other factors. Retail prices are likely to rise even further after the next price revision.

The current retail price of almost anything does not reflect the true costs of production anyway.

Supermarket chains are notorious for squeezing farmers for profit. The farmers are the ones getting up at the crack of dawn, working hard all day in all weathers and taking the risks. The supermarkets just move boxes from A to B. But it is usually the supermarkets that make the bulk of the profits. Dynamic pricing is common - supermarkets could easily be more flexible.

Supermarket chains are notorious for squeezing farmers for profit.

They don't squeeze any harder than other buyers. The vast majority of fresh produce is sold to processing companies such as Ajinomoto, and they also drive a hard bargain. The supermarkets sometimes offer a premium, but they are relatively small volume buyers so often not worth the trouble for larger suppliers.

But true, farming is a very risky and difficult business. Some get rich, but it takes careful management to survive the lean years (and some luck). And fresh produce is about the only product I can think of that gets cheaper when the quality is at its best (bumper harvest) and more expensive when the quality is lowest (poor harvest).

Inflation, feed costs, oil prices, etc. all eventually will cause prices to rise in just about all foods.