Where to buy electric bikes (eBike) in Laos

I want to buy an electric bike here in Laos, but haven't found a shop so far. I know that Sunlabob has electric bicycles, but they are quite expensive and the motor actually just supports you. There is also a shop at the morning market, but they sell only cheap Vietnamese electric bicycles. I have seen some electric scooters here. Today we went to the Chinese Market, but haven't found a shop there (instead we were fined 100.000 Kip for turning left where it wasn't allowed). So if anyone know where to buy an electric scooter in Laos, please let me know