Woot has SuperHandy 250W Electric Adult Tricycle w/ 2x Batteries for $392.99. Shipping is free for Amazon Prime Members (must login with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.

Thanks to Deal Hunter ItsSoCheap for finding this deal.

Features:

• Robust 250W brushless motor, the SuperHandy Etricycle ensures silky-smooth rides. Equipped with two 48V-2Ah batteries, you can expect a base range of 12.3 miles under full load. Lighter adventures? Venture up to 40 miles on battery power alone! Plus, pedal assist can push your journeys even further. Bonus: these batteries are compatible across our SuperHandy product family
• Holding up to 330LBS
• Impressive maximum speeds of 7.5mph in Battery mode and 9.3mph in Pedal-assisted mode