i have looked into selling it on there, but i was told you have to wait 4 days to get paid.
Another option is to list them on localbitcoins but you most likely won't find a single buyer to purchase that many. Using localbitcoins you can perform face to face trades in a public place.
I mean he doesn't need to sell all 10 at once. I'm sure he can sell them slowly off on localbitcoins.