I got a hook up on canvas stayfast tops. Real nice and straight stitching. heat pressed with glass back window. I got mine for $625. I thought it was a good deal. $490 with rear plastic window. Colors in stock are ,black,blue, tan, and burgandy. Other colors available but are $60 more for custom orders. Price on custom orders such as color match on exotic colors will be between $100 to $150 . Also for blank canvas rear window is $90 and has zipper and will install like a regular rear window.
I did research an saw some real low quality work. It was a cheaper price but i figured you gt what you pay for.
If any one is interested shoot me a pm. I will get more details for you. This is from a manufacture that im going to be working with ,so im told that these are good prices. Can get them for most gm cars. I havent installed mine yet but snapped a quick picture of one that was done on a buick. Looked tight.