Amazon has the NZXT H9 Flow Dual-Chamber ATX Mid-Tower PC Gaming Case (White, ‎CM-H91FW-01) on sale for $108 with free shipping. Also at Walmart. Includes four 120mm fans. 

• Editor's note: This is an excellent case. I've been using it for my main rig for the last 9 months. The airflow is top notch.