How much would you buy a mp4? all answers!!?

Question

an unbranded mp4, very good quality. 8gb memory.

new in box give your answers in usd or gbp(preferably)

http://i1.ebayimg.com/06/i/001/03/3f/7252_2.JPG that's the media player

Answer 1

£20 would be a bargain.

£40 would be too much.

Answer 2

well if its one of them knock off chinese ones.. nothing because the real memory of a 8gb one is more like 512-1gb.

£30 if it was genuine