You pay regular sales tax once you get the car to ohio. 6.5% somewhere around there, probably 30% by now.
You'll also need to get an out of state inspection for like $10, and then you'll need $11 temp tags to get it to the $20 e-check (depends on county) then you can buy your plates like normal!
Notorization depends on the state the car is registered in NOW...
Ohio requires all car titles to be notorized, for example. But i bought a car in Boston, and MA doesn't require notorization, so it wasn't required to be notorized.
So:
You pay sales tax in ohio.
You need out of state inspection.
Notorization depends on current state of the car.
Don't mess up or it will take a LONG time!!!