Just got this fully functional X220 tablet and somewhat functional R51 for a total of only 50 bucks. Both turn on, the X220 has plastic shell damage and the phantom touch issue
Adventures in buying & upgrading a Thinkpad X220 Tablet
Amazon.com: Lenovo Thinkpad X220 Tablet - Intel i5-2520M 2.5GHz, 12.5" HD WXGA (1366 X 768) IPS, MultiTouch LED Backlight w/ 720p HD Camera, 4GB Ram, 320GB HD : Electronics
New Laptop Battery Lenovo Thinkpad X220 Tablet X220t Series - AliExpress