A new collector once sent me Bonanza chips and they were rated an H in TCR if memory serves me correct. I explained to this collector they were obs. and I was getting the better end of the deal. They since were reissued which I wasn't aware of and are now a B chip I think. I felt good being honest and teaching the same way people taught me.
Now if someone has a a price of X amount on an item I don't feel bad giving them the price they asked for. Again That's business. And yes the trader can be disappointed in getting screwed. I know I would be. I may not ask for my strike back because a deal is a deal. Barry