Here are the speca: intel i7 4790, gtx 760 ti, 1.8 TB hard drive, cooler master hyper evo 212, Asus intel z97k , evga supernova G2 550w gold fully modular, corsair carbide 400c and 16gb ddr3 ram. How much should i sell it for (GBP) on eBay? Most of the parts are 1-2 years old.