As one of its daily deals, A4C offers the open-box BlackBerry PlayBook 7" 16GB WiFi Tablet, model no. RDJ21WW, for $39.95 with free shipping. That's $5 under our mention from a week ago, the best now by $20, and the lowest total price we've seen. This 24-oz. tablet features an ARM Cortex-A9 1GHz dual-core processor, 7" 1024x600 touchscreen LCD, 16GB internal memory, 802.11n wireless, Bluetooth 2.1 + EDR, 3-megapixel front-facing camera, 5-megapixel rear camera, micro USB, HDMI, and BlackBerry Tablet OS. Deal ends today.