Amazon online has chairs at a great $$$. They also have replacement parts such as the motor that usually goes first for $25 and you just plug the new one in after you unplug the old.
medical supply places have the Mercedes Bendz of chairs although the others work just as well. I have one that's 25 yrs old & mymother in law uses that still. I since had a stroke leaving me paralyzed soo now use one.