Newegg.com has the Antec Three Hundred Black Steel ATX Mid Tower Computer Case for a good price.

Pricegrabber Price : $59.99 ~ $87.08 Shipped

1. Newegg Price : $59.95 Shipped
2. Use coupon code Atec10 to get $10 off ( Exp : 9/15/11 )
3. Rebate Price : -$15.00 ( Exp : 9/21/11 )
Final Price : $34.95 Shipped After Rebate