car stereo for sale or swap. 65quid or why ?

I have a good car stereo for sale in perfect working order.It has aux input socket on front as well as a usb port for your memory sticks full of music.There is also an sd card slot to if you prefer. The stereo is 4x45 watt output. And has aux input socket at the back for an amp or something. Would like around 65 for it