How much should I sell my Nikon D40?

I had it since february of this year and it works fine, no scratches at all. Its a 15-88mm

I was thinking of 300 but don't know if thats to expensive?

if so what would be a descent price to sell it?

A D40 in good condition with a 18-55 mm lens will probably sell for $300.

It is still a very popular camera like the Nikon D90