This is one thing that I really dislike about digital music stores - the fact that most of them don't offer a lossless option at all, and in the rare chance that they do, it usually costs extra, even though it really should come by default (because sheesh, it's what we've been getting on CDs for ages). Bandcamp is one of the few exceptions that get at least this thing right by offering a variety of options for a single price with lossless being one of them.

By the way, there's no reason to keep stuff around as WAV/PCM, it'll be just as lossless as FLACs (and thus can be further transcoded with no issue whatsoever) and you can actually tag the stuff like that too.