[mrreality68]

I do not sell unless I am either upgrading or if it is something that is something I no longer want for my collection.
So if I sell it then it means I got the price that I wanted.
And it is a price the buyer is happy to pay so it is a positive transaction for all.
Once it is his/hers they can do as they chose.
If I wanted more for the price or felt I had better options then I should have explored them.
Since I did not and got what I agreed to sell it for then no complaints

The only time I would be frustrated if I only sold it because the person I was communicating with said they needed it for their collection to complete a set or what they needed. If they then flipped I am a little annoyed because i gave it up under false pretense and i thought I was helping them out. But again I sold it so it is theirs