Del. Code tit. 24, § 6110

The amount to be charged for each fee imposed under this chapter shall approximate and reasonably reflect all costs necessary to defray the expenses of the Board, as well as the proportional expenses incurred by the Division in its service on behalf of the Board. There shall be a separate fee charged for each service or activity, but no fee shall be charged for a purpose not specified in this chapter. At the beginning of each licensure biennium, the Division, or any other state agency acting on its behalf, shall compute, for each separate service or activity, the appropriate board fees for the licensure or biennium.