Karma, Golden Rule, call it what you will....
I was turned on to a 1965 Strat and the lady wanted to at least make her money back. This was 15 years ago, her husband bought it for their son on his birthday prior to going to vietnam..... at the time she told me they bought an older one that had been in the store for a few years un-bought. She pulled the case from under the bed, I opened it, found the original hang-tags, original strings, and a receipt for $200 + tax. She asked me for $150...... I have to look at that bozo in the mirror every morning so...... I told her it was worth at least 10 times that amount. She went on about how her son never learned to play before he left for war and she also told me he never came home from that war. I told her thank you but I couldn't afford what that guitar was worth and even gave her information as to where she could sell it.
The karma gods patted me on the back and touched her heart. She gave me the guitar and only asked that I take care of it. I play that guitar everyday.
The right thing to do is always the right thing to do.....
Phil