(1) make system products available at a cost consistent with the requirements of this subtitle; and

(2) cover the cost of providing the system product and an additional charge of no more than $50.

(b) A governmental unit may sell system products to the general public for a fee that reasonably reflects the cost of providing the system product.

(c) A governmental unit:

(1) may reduce or waive the fees that it charges for system products that are to be used for a public purpose; and

(2) shall apply its reduction or waiver of the fees uniformly among persons who are similarly situated.