er--that a tough one @ $20 each.
i bought 10 of those decades ago for $4.99 each i think it was. maybe even less-- i can't recall other than these was the cheapest mags out there at that time.
i think i got two left , some cracked, some warped , some of them would not hold even close to a full amount of rounds and would double feed like crazy-- no that was the early thermoulds. LOL! --
anyway they ain't the best mags , being used and from SARCO ain't helping either.
some of them ran OK for me-- nothing to write home about though.
i suppose if you need mags really-really bad --they might be worth picking up--just don't expect them to be P-mags--
hell SARCO just had some tapco ar mags for $22 but they sold out in minutes-- they would have been better than the ancient orlites ---
go to MAkO and order some of these if they still got any steel mags---
M16/AR15 Steel 30 rd 5.56x45mm Magazine - White Follower