Coin selling/buying

Hey,

i just dont found anything about it...

I was wondering if there is any option to sell left behind Coins?

Thanks in Advance.

You mean, to use a few spare coins? You can use the trade section to buy gold with them.

Yeah something like that.
And if someone decides to leave the Game and got Coins left - What he got to do?

If you mean sell your coins for money, that is not allowed by the game rules.