Bought in October of 2015 (2 yrs old now). After 4-6 hours of screwing with it I decided it was not for me and boxed it back up and put it in the closet. Bought it from NewEgg. My price then was $166.96 US with free shipping. Just checked Newegg and here's a link to today's prices for X52 Pro (not sure if "Black Friday" or "Cyber Monday" discounts are in those prices).
Asking $100 US, you pay (or arrange) shipping.