While they aren't seen for sale everyday, they are not rare unless you are looking for the ACE 2. There was the Ace long rifle, Ace 1, Ace 2 , Ace lll and Ace Special. So which one is he looking for? Condition will have a lot to do with value and most of these old guns won't be in that good of condition. Price can be anywhere from $50.00 to $150.00 give or take for a very nice original example. Average typical gun is around $100.00. The Ace 2 might bring a bit more if you can find one.
