My god, do you know what that thing is worth????
Dude, you can do WAYYYY better than that. Try Walneck's Cycle Trader, and Ebay. Even if it were a POS, Barn Fresh example of one of these it would be worth more than $550... Three wheelers are collectable these days-there's someone out there that would LOVE to have a mint threewheeler just like the one he and his buddies used to thrash back in the carefree summers of their youth.