I've been buying canned cat food for our cat by the case from Amazon for a while now. He's a typically fussy cat who only wants one particular brand and flavor, and since the price on Amazon was about the same as our local market it was easier that way. When I got to the bottom layer I'd order another case.
The price was always right around $18 for 24 cans, but yesterday the cheapest of the 4 or 5 vendors on Amazon wanted $37 for it.
It was still 75 cents a can at the market, so today I bought all 24 cans that were on the shelf. He eats some dry food too, but if he can't have his can of wet food every day he's going to be one unhappy camper.
It seems like the shortages cycle through various products at random.