I usually hold onto them for awhile, and if they never end up selling, I donate them to the local high school team. There are many kids out there whose parents cannot afford to buy them equipment.
OR....for instance, recently I had a Brunswick Ultimate Inferno that was MINT, and no one wanted to buy it, and those that did want to buy it wanted me to basically give it to them. SO, what I did with that ball until I found a good deal for it was:
I used it as the door stopper for the pro shop. The door is set up to close automatically, so the Ultimate Inferno was a very expensive "eye grabbing" door stopper.....and I must say that it did a better job doing that than it did on the lanes.
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Owner/Operator
C-G Pro Shop