Originally Posted by
FLRider
As you've probably already gathered, the answer is, "It depends."
Though, if you do find one, don't expect the employees to know anything about weights of fabric, tensile strength, or...well...pretty much anything related to our outdoor passion other than the cost of the fabric. This is true even at places like JoAnne's, which is a fabric store, not just a big-box department store that happens to carry fabric.
Hard to blame them, though; we're such a niche community that we probably don't even bring in 0.1% of total sales for a place like that.
Anyway, good luck in your search!