newegg offers the DIYPC Black Acrylic ATX Open-Air Bench Computer Case, model no. Alpha-DB6, for $39.99. This $10 mail-in rebate cuts it to $29.99. With free shipping, that's tied with our February mention as the lowest total price we could find for any open computer case by $10. This case does not include the pictured computer components or a power supply. It's compatible with ATX/Micro ATX motherboards. Deal ends July 22.