Raising the price on a "damaged" weapon at a FTF is very rude imo. However we are all human and subject to change our mindset at any time. Maybe you gave the seller the impression that it was worth a lot more than he figured?
Did the seller not like your trade? Perhaps it was not what...
Survivorman is the only one that did his thing for real. The others are simply there for entertainment purposes. While you might learn something form watching the others IMO Survivorman is the best show. Have they stopped making new episodes?