Groupon offers the HP Slate21 Pro NVIDIA 1.66GHz 21.5" 1080p Touch All-in-One Desktop PC, model no. F7U54A8#ABA, for $239.99. Coupon code "TRIPLE" cuts it to $215.99. With free shipping, that's tied with our mention from three weeks ago as the lowest total price we've seen for this model. (It's also a current price low by $83.) It features an NVIDIA Tegra 4 1.66GHz quad-core processor, 21.5" 1920x1080 (1080p) LCD, 2GB RAM, 16GB eMMC flash storage, 802.11n wireless, Bluetooth 4.0, SD slot, webcam, and Android 4.3 OS (Jelly Bean). Coupon expires March 5.