I purchased a used pellet stove from a friend. It had about 25 feet of 3" flex pipe that he gave me too. I don't need it. Anyone know if a stove store would buy it back, or what else I can do with it? I know it's worth some money, so I'd like to see what I can get. He only used it for 2 seasons and only burned a couple of tons of pellets with it, so it's still in great shape. Thanks.