The maths of the Wheel (probability/odds)

Rukii wrote:
I have only tried it once (right now actually) and I got the claus building, thought that was what everyone got on their first spin, guess not. How come some of you already have been able to spin it many times, can I get coins besides from the bar and/or using donuts?

I've spun 3 times. Twice with coins from Egg Nog Bar, and once with a coin I found in a gift. Received Marge and Maggie snow people (already owned both from last year), and lights for Krabappel's apartment (which I did not get last year).