I'm offering to sell my 15 puzzle for 13 buttons. (2 Buttons off.)
Edit: now 12 buttons!
You really should offer it for 10 buttons.Give a little to get a little.Why are you selling your 15 puzzle game in the first place?Don't you like playing the game?
If you are having trouble with playing the game I can tell you that the more you play it the better you get at it.
Good luck with selling the game!I already have one.
I think I will change my offer to 12. I bought the 15 puzzle to get buttons, but I think there's better ways to get them.