I've gotten a couple from the free shop. What do you get if you use them in the machine? I don't want to waste them. :D

Well I used mine and I got a minions : / I think its like those vending machines.

Decent minions? Otherwise I'll just sell the coins themselves. XD

well...I received an Bitten Pie Minion and it is valued in 88,000 sP If I were you I would totally sell the coins (they are valued on 344,000 sP ). Do not think it twice! XD