i dont think its just house, i know plenty of djs who dont buy ANY of the stuff the mix if its mp3s and most ppl just prefer to download these days anyway. It's all about the quality of music most the time, a lot of it sucks, so we just want that one really great song and not the entire shitty album. Its rare nowadays that anyone will pay for shit. Although now with sites that offer downloads of songs for a small fair price, its slowly becoming more the norm. I try to find stuff I want off of pay sites and i dont mind paying a dollar or a bit more for just one song I really want digitally or as a single with a few good remixes. The other thing is, djs especially have over the years shelled out LOTS of cash on vinyl most of all even cds and to be honest they dont make back a lot of that money even with the gigs they get, there are a few that break even but most dont. Yah thats pretty much it.