Del. Code tit. 24, § 5214

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 of Professional Regulation in its service on behalf of the Board. At the beginning of each licensure biennium, the Division of Professional Regulation, or any other state agency acting in its behalf, shall compute, for each separate service or activity, the appropriate Board fees for the licensure biennium.