Agreed. Ive never had any problem selling my aftermarket stuff, but I dont buy crap either. I have used my current front speakers in my past lexus and the Z. I had to sell my rears, only Polk 6.5" mm651, but only lasted 2 days on ebay before someone bought them. Some stuff is hard to move and from what Ive seen its because its either really high end or not good at all, but the middle of the road quality usually has no issue.