Well, specifically in regard to buying and flipping new, limited run releases - it makes the records even more unavailable. If a label puts out 300 copies of a Johnny & the Dumdums 45, 400 fans want it but 50 of those people buy 2 or 3 copies each to flip on eBay a month later as "unplayed"... that's shitty. Totally different if you find some forgotten gem in the bins and want to sell it.