Fullbore plastics did 10$ but stopped selling them a while back. yamaha sports plaza sold me one for my wheeler for 10.50 about a month ago and Devious powersports sold me one for my RZR for 10.50 just before thanksgiving.
I'm not aware of any sellers in the Portland area that sell for the 10$ flat price currently, I was just stating that the state only gets 10$ of the 10.50$
Who charged you 12$? It is illegal for businesses to mark the permits up more than .50$ unless the price went up in the last 2 months and I didn't hear about it.
I'm not trying to call you a liar, I'm trying to keep you from getting screwed.
Edit: straight from the states website
https://www.oregon.gov/OPRD/ATV/pages/permits.aspx