Originally purchased from Relax the Back, on State Street, whose current models are selling from $500 - $999.
This one has not been used for quite a while and is excellent mechanical condition.
If you and your doctor agree that an inversion table might help whatever back aches you have, hanging from this device for 30 minutes after a workout may help to relieve the tension in that area.
The EP-950 is a quality device and the price is right.