hah just looking around for fabric deals, (ebay has some good ones every now and again, i just scored 6 yards of 1.1 oz fabric for 1.25 a yard)this person is selling 560 yards of 1.1 nylon for 20$!this would make a nice big group purchase! 40 yards for everyone! unfortinitly its a pure finish (no dwr etc) but i could imagine you could add some yourself, or just use it for prtotypes.
http://tinyurl.com/ru4gq
mike!