It's in Barrrow, Alaska which is the northernmost and remotest point in alaska. It's above the arctic circle and mostly full of natives, which explains why stocking a supermarket there is extremely expensive, hence the prices.
I'm guessing it's there for the tourists and researchers on government/private grants and not the natives
In Alaska a wholesale pound of king crab legs is cheaper than a gallon of milk.
https://www.adfg.alaska.gov/index.cfm%3Fadfg%3DCommercialByFisheryshellfish.shellfishcatch_exvessel_crab