I'm not real familiar with Reno, but there is a fabric warehouse place called Mills End. It doesn't look like much, but they've got tons of fabric, very reasonably priced. If you would like to get together, please PM me and maybe we could arrange to meet, I'm about 4 hours away.
Mill End Fabrics
(775) 322-5844
1745 Kuenzli St (Corner of Kietzke & Kuenzil)
Reno, NV 89502