Assistive device lift chair for bathtub for elderly/disabled

Bellavita bathlift chair in white made by Drive Medical. Assistive device for helping person get in and out of bath tub. Usable in the shower the seat can be raised or lowered from 6cm- 48cm (2.4"-18.9") in height. Basically a chair that lowers and raises with the use of a remote control, from height of standard bathtub to a few inches off the ground. Purchased for $1300 new and was only used for a short time by my grandmother who passed away. In Perfect working condition. Asking 800 or best offer