I have done the same thing. I accidentally bought a toy soldier the other day, and while he's not 70 diamonds, it's still frustrating to lose them for items I didn't want. But one way I have found to not accidentally buy things from the deco store is to scroll on the left side of the list where the name of the decoration is. That way you don't accidentally pull a decoration out onto your farm.
but really now, the confirm button is way overdue SC!!





