Hmm, interesting about the top for $500. I just ordered one for my car, 1,450 installed with back glass. I asked the guy about the tops on ebay, he said he had tried a few and that he was unimpressed with the quality of them, told me I wouldn't be happy with one. I do trust this guy he did the complete interior on my olds and did a wonderful job.
I decided to go with a black stayfast fabric one. My tan was coming apart at the seams, back window last week when I was washing the car came off the top along the bottom. you can see where the stitching is dying on the top.