Check out this towing thread

[Norm reynolds]

Here is the schedule fees for the state of pa
as of last year but I think the fee [img]/ubbthreads/images/icons/shocked.gif[/img] is the same
Class Registered gross weight and Reg-fee
1 5.000or less $ 58.50
2 5.001-7.000 $ 81.00
3 7.001-9.000 $ 153.00
4 9.001-11.000 $ 198.00
5 11.001-14.000 $ 243.00
6 14.001-17.000 $ 288.00
7 17.001-21.000 $ 355.00
8 21.001-26.000 $ 405.00
9 26.001-30.000 $ 472.00
10 30.001-33.000 $ 567.00
11 33.001-36.000 $ 621.00
12 36.001-40.000 $ 657.00

They have class up to 25 at 80.000 gvw but I dids not list them I dont think any bodys trailer is that heavy