I have had one of those now for almost 7 years. Got it with a route I bought, so I dont really know how old it is. The only thing I have ever done to it was put a validator in it. Price sounds fair.
Sell them on ebay and use that money to buy some good validators. Sorry but thats just how strong of a dislike I have towards them USA's. Nothing but trouble! Speaking of that I have several of them still in the box from the repair shop. Would you be interested?
If this is one of the "old" lance machines where if you turn the spiral by hand and the motor kicks in and completes a cycle. Then you could have a bad relay one of the two up above the coin mech. I dont have much expierence with these machines but I have had to play with a couple of them.
For a multi price machine, I dont know off the top of my head. I would call a Vending repair shop like Vendors exchange and see what else will work in its place. Those USA's are junk.