CowBoom offers the used PlayStation 3 500GB Slim Console, model no. CECH-4001C, for $149.99. Coupon code "PS31115" cuts it to $124.99. With free shipping, that's tied with our mention from last week as the lowest total price we've seen. (It's also $125 under the best price we could find for a new one.) It features a built-in Blu-ray player, 3D support, built-in WiFi, and HDMI output.
Note: No warranty information is provided. Also, this used unit may have scratches or dents and/or be missing accessories, such as a controller.