I paid $1,500 for this treadmill and used it every day for nearly 20 years. I've replaced the main circuit board (and still have the old one that can be repaired if necessary since they don't make them anymore). I've replaced the deck, the belt and the bearings.
This treadmill is a beast. They don't make them like this anymore. But the motor circuit board is acting up now. I'm told it needs repair but parts don't exist. It's probably a capacitor or some other circuit board item that's simply failed from 20 years of almost non-stop use.
$200 or best offer. It weighs A LOT. It's built to take the punishment of a 300-lb jogger. The chest strap heart rate monitor no longer works. But you can buy a replacement for that. I don't have the original one anymore.
Pick it up today! I'll deliver for $100 extra. You'll need a truck and a couple of strong backs to lift it up and out again.