how much do you guys think i could sell this for. ive got a inspirion 560 that i have turned into a gaming pc. its got a 2 core quad 2.33 ghz processor. it has 8 gigs of 1033 mhz ram. its got a 580 watt power supply and a 750 gig 7200 rpm hard drive. the gpu is a r7 250 2gd3 video card. it has a dvd rewritable disk drive. it will come with two dell 15 inch monitors and a keyboard and mouse. it will also have windows home premium installed.