I got it for my nephews but theyre too small to know how to use it, so it doesnt get used at all. i got it in the PS3 320gb bundle. Perfect condition and it is indeed fun, but as i said, they dont use it.
I'd give you $50 for it I can't imagine its worth more than $70 (if you figure in fees selling it on ebay or Amazon). Trade in value can't be more than $50.