Both Aamp and CMK sell good vinyl, but you need to be a business to shop at either place. I've been to Gulf, and I thought the selection sucked.

Check Selectproducts.com They sell vinyl and carpet to consumers. They are in Miami, so you'll have it next day.

Unless you are really covering something complex, don't spend the extra money on the 'super stretch' vinyls. In my experience, the regular automotive stuff and a heat gun will cover most anything. I'd avoid most of the JoAnn's fabric type stuff, as its just not suitable.

Toby