eBay has the Surface Pro 3 Core i5 12" 256GB Tablet (QG2-00021, Summer 2014)) for $550 with free shipping. List price: $1299. Features Intel Core i7-4650U 1.7GHz, 8GB RAM, 256GB SSD, 12" touchscreen (2160x1440), two 5MP HD cameras, Surface Pen, 802.11ac, BT 4.0, USB 3.0, Windows 10 Pro.
Staples has the Apple iPad Pro 10.5" 64GB WiFi Tablet (Space Gray, Silver, Gold, or Rose Gold) for $599 with free shipping. List price: $649. Features 10.5" Retina display, A10X Fusion chip with 64-bit desktop-class architecture, touch ID fingerprint sensor, 12MP camera with 4K HD video, 7MP FaceTime HD camera.
Microsoft has the NuVision Solo 10 Draw 32GB 10.1" Windows Tablet (Blue, TM101W610LBL; Pink, TM101W610LPK or Silver, TM101W610L) for $99 with free shipping. Retail price: $249. Features 10.1-inch Full HD touchscreen, Intel Atom x5-Z8300, 2GB memory/32GB eMMC, up to 6 hours battery life, includes stylus and sleeve.
Staples has the Apple iPad 9.7" 32GB WiFi Tablet (Space Gray, MP2F2LL/A; Gold, MPGT2LL/A or Silver, MP2G2LL/A) for $299 - $25 off when you pay with Visa Checkout = $274 with free shipping. Features 9.7-inch Retina display, wide color and true tone, A9 third-generation chip with 64-bit architecture, M9 motion coprocessor, 1.2MP FaceTime HD camera, 8MP iSight camera.