Wornick, which makes most of the real MREs, used to sell a civilian version. Their brand was "MIL-SPEC", and then "Eversafe". Now they don't seem to want to sell those at retail, probably because they normally ship by the shipping container load and the eBay resellers can't handle that much product.

Everybody seems to be out of stock on civilian MREs right now, except for resellers who are doubling the price. (Each meal is worth about $6.) The people selling "surplus" MREs are usually selling expired ones.

The chicken-based ones are usually pretty good. The pasta-based ones, not so much.