There are tricks (wink wink)
If you give her say, 9K cash, see if you can get the receipt made out for 7K cash.
If the buyer and owner have a mutual understanding, and there is no paper trail, you can save 2K worth of sales tax.
It looks like the tax is based on vehicle age, not value...unless I'm reading all this wrong.
then all states are different in idaho you pay sales tax on the value.. the age is used to determine how much the registration is
I just read your link it goes by purchase price... re-read it again unless im reading it wrong