Speaking for myself, and only for myself here... I'm one of "those" customers that will sometimes go looking for textures for clothing and hair months, or even years, after buying something.  And of course, here at Renderosity, they're usually unavailable.  I usually buy textures when I'm going to be using them, instead of just buying them  "just because" so that I have them in my runtime.  For me, this is usually a bigger issue with hair textures than clothing textures. I can make simple clothing textures on my own (but I'm nowhere in the lead of some of the "big names" of texturing that sell products).  However, I really haven't done much playing around with texturing realistic hair products (I do my own toon hair textures though LOL).  So sometimes I'll turn to vendors like Silver, Sveva, 3-D Arena, and so on that do make great ready-to-go hair textures for realistic hair products, even years after I've purchased a hair model. After all these years, I'm still aquiring "new to me" hair models (particularly expensive ones) that have been around years, but I have to wait until excellent sale prices come up to have them for my own runtime.  It's annoying to go hunting for textures for my new toys only to find out they've long ago been removed from the marketplace.  :(