Microsoft Store offers the Dell Venue 8 Pro 8" 64GB Windows 8.1 Tablet, model no. BELL8-1820BLK, for $299 with free shipping. That's tied with our mention from a month ago as the lowest total price we could find by $20 (outside the price below), although we saw it for $10 less in January. It features a Intel Atom Z3740D 1.33GHz quad-core processor, 8" 1280x800 IPS touchscreen, 2GB RAM, 64GB memory, 1.2-megapixel front-facing camera and 5-megapixel rear-facing camera, dual-band 802.11n wireless, Bluetooth, media card reader, and Windows 8.1 32-bit. Deal ends April 23.
A close price is Dell Home's $299.99 with free shipping. If you don't mind a refurb, AltaTac via eBay has one for $99 less.