If I bought it I would be wondering what lorry it fell off! Or where it had been half inched from. Still its a funny old world. Though if I had been given that bike as a gift and didn't want it I would take it back to the shop, sure they would give you more than that price to have it back again
A word of advice to anyone considering this bike, if advice be needed, ask for proof of ownership, frame number, is it complete with battery and charger, finally why is it so cheap.