Was thinking about something that was said earlier, and thought about it...
In my years in the hockey collecting hobby I don't think I have ever sold a card. I've sold off some spare supplies on an occasion or two, but never a card that I can remember.
I've listed cards for sale...I do recall a couple offers on stuff I had for trade, but they were turned down. Probably my "it will all go in a trade" mindset at work there.
Maybe because all the cards I've had on my trade list have gone elsewhere in a trade eventually. That's an interesting, and I believe extremely unusual, situation in this hobby.
Anyone else have an "unblemished" type of track record as far as their long term type collection?