anyone know where to buy clear tpu keyboard protector for m14x?

I wanna ask sifu about my alienware value because i wanna sell it.i need some money for my wedding.

m14x r2
3rd Generation Intel® Core™ i5-3230M Processor (2.6GHz with Turbo Boost 2.0 up to 3.2GHz,3MB Cache)
Windows 8 Single Language, English (64bit)
14.0" (35.56 cm) WLED HD+ (900p) display (1600X900)
8GB 1600MHz DDR3 SDRAM (2 x 4GB)
1TB 5400RPM Hard Drive
2 GB GDDR5 NVIDIA® GeForce®GT 650M using NVIDIA Optimus™ technology
Slot Load 8X DVD+/-RW Drive with DVD+R double layer write capability
2-year InHome Service with Accidental Damage Service from 21/12/2012 to 22/12/2014
if i sell it how to transfer owner names and how much to pay for it?
thanks.

thanks for helping