Zappos.com offers 60 different styles of Supra shoes starting at $45 with free shipping on all orders. Pictured is the TK society skytop in the Red and White Colorway for $140 with free shipping. (search Supra).
Karmaloop.com offers 43 different styles in Mens and 11 different styles in Womens Supra shoes starting at $37.95. Use code JUICY at checkout for 20% off any full priced (non-sale) item. Code JUICY expires July 30.
80sPurple.com just recently began offering Supra shoes and apparel.