There is a laptop on ebay that has a really low bid because the keyboard is faulty. This is the laptop http://www.ebay.com.au/itm/ASUS-Zenbook-UX31E-13-3-128GB-SSD-Core-i5-1-7MHz-4GB-ram-faulty-keyboard-/262215816380?hash=item3d0d47d4bc:g:KX8AAOSwJcZWg5-l
I did some research and it seems like the keyboard ribbon cable is at fault.
Source: https://www.youtube.com/watch?v=5E-2RCp8CZ0
https://www.ifixit.com/Guide/Unresponsive+Keyboard+Keys/11932
Is it worth it?