Spotted this earlier, anybody looking for a cheap duel voltage controller and LCD. I think D8veh used one of these on a recent build. Also noticed PSWPower on Aliexpress have new stock of sine wave controllers.
https://www.ebay.co.uk/itm/36-48V-350W-Motor-Speed-Controller-LCD-Display-For-Electric-Bike-Scooter-ZH-/232781266082
https://www.ebay.co.uk/itm/36-48V-350W-Motor-Speed-Controller-LCD-Display-For-Electric-Bike-Scooter-ZH-/232781266082