They've never kept an updated and accurate inventory, and neither has Quality Camera. If you look at either businesses used inventory and turnover, it just couldn't be easily done, much less cost effectively - I'd guess it would take the better part of a full-time person to do it and the site would have to be updated daily. That makes it difficult for people not close enough to drop in regularly, but that's the way it is. I know Midwest's inventory has been "thin" lately, but seems to be because they're well known and a lot of people buy from them.
I was at Quality Camera in late summer, and Jeff had a good and diverse inventory of LF items including a Kodak 305 poartrait, a 10-1/2" 3.8 Vitax, a 10-1/2" f/4.5 Cooke knuckler, several used Ries tripods, some ULF filmholders and filmholder cases, and he'd just bough out a couple of studios so he had the usual multicoated Rodenstocks, Schneiders, Nikkors, and Fujis galore. The used camera inventory was a little thin, but I've been there before when it was not.