92 Ill. Adm. Code 454.300
General Requirements
Section 454
Section 454.300 General
Requirements
a) Any and all rates or charges made by an operator of an
Official Testing Station for performing a safety test for a second division
vehicle other than a school bus shall be just and reasonable.
b) A rate or charge is "just and reasonable" if it is
the same, or nearly the same, as the prevailing rate or charge for the same or
similar test made in the community where the Official Testing Station is
located.