BATTERIES NOT INCLUDED. NO REGEN FEATURE. TORQUE ARMS NOT INCLUDED.
https://www.ebay.com/itm/48V1000W-26-...
1000 Watt 48 volt Ebike Conversion Kit Rear Wheel with LCD Display from "xcceries" ebay store with California based warehouse.
Purchased for $216 total. I could have spent a lot less, but I really wanted the extra features of the LCD Display. Also, I'm using the front wheel version of this already, but wanted a rear wheel version on another bike for added safety. CAUTION for safety - my advice is that you MUST use torque arms (purchased separately), especially if you use the front wheel version. You have been warned!

Generic branded as Yescom, Xcceries, Champion, High Power, etc, Rear wheel, 7 speed, LCD display Controller
California based warehouse.
Top speed of over 30 mph.