I just had a recent comment about my Selig chair - the commenter mentioned that they didn't want to use leather for their re-do projects. I replied that there are now a lot of very nice, durable, and "green" vinyls out there, and that I purchased mine from Designtex through my job. I also looked up Designtex on the web, and discovered they have an online outlet store! including some vinyl for only $6 a yard (I paid way more than that).
The site is a bit tough to navigate, but worth it to score professional grade upholstery fabric for cheap!