I stopped into a small LGS today, and while I was browsing, a younger guy came in with two guns to sell. He said they had been his uncle's, who used to come to the shop. I assumed he'd passed. He had an H&R single shot shotgun and a Marlin Papoose .22 with case and a spare Ramline magazine.
The owner offered him 75 for both, and stepped over to help me look at a Boberg 9mm while the guy thought. The guy took the offer, and while they did the paperwork, I stepped out. I wanted to offer him a hundred bucks for the rifle, and would have followed him out of the store to do so if he hadn't taken the shop owner's offer, but he did.
When the guy had left, I stepped back inside and asked the owner if he'd like to double his money on the Papoose. He smiled and said 'yes, and thank you for doing what you did, not many people would have.' I replied it's his store, and that wouldn't have been right, but he thanked me again and I walked out with a Papoose for under the hundred I'd have offered the younger guy. I'd like to think to some extent I got the rifle at a good price as a reward for acting properly in the store.