I have a case (12) of Nuflex 640 Thermoplastic caulking that I do not need. Before I attempt to sell it on eBay, I will offer to anyone on this forum. I will sell 6 tubes for $50 plus shipping or the entire case of 12 for $100 plus shipping. As I recall, the Winnebago dealer price is around $13 a tube. If you are interested, send me a private message.