I purchased one on eBay on May 5th for $20.55. It seemed to be a good price and it also came with a Fear-Out Iron-Ons sticker which was a cool bonus.
That is a good price. I would expect to pay between $40 and $60 for a 15th puzzle in at least decent exc/exc+ shape or better. I wouldn't be surprised if a nice nm no wax stain all pieces decently centered 15th puzzle to sell for $60. As soon as you round some corners, have some wax stains or get some poorly cut pieces, it becomes very subjective & hit or miss.
