; and (3) the cost of designing and issuing the coins (including labor, materials, dies, use of machinery, winning design compensation, overhead expenses, marketing, and shipping). (b) Bulk sales The Secretary shall make bulk sales of the coins issued under this Act at a reasonable discount. (c) Prepaid orders (1) In general The Secretary shall accept prepaid orders for the coins minted under this Act before the issuance of such coins. (2) Discount Sale prices with respect to prepaid orders under paragraph (1) shall be at a reasonable discount. (d) Marketing and educational campaign The Secretary shall develop and execute a marketing, promotion, and educational program to promote the collecting of the coins authorized under this Act. 7. Surcharges (a) In general All sales of coins minted under this Act shall include a surcharge as follows: (1) A surcharge of $35 per coin for the $5 coin. (2) A surcharge of $10 per coin for the $1 coin described under section 3(a)(2). (3) A surcharge of $5 per coin for the half-dollar coin. (4) A surcharge of $50 per coin for the $1 coin described under section 3(a)(4) (b) Distribution Subject to section 5134(f) of title 31, United States Code, all surcharges received by the Secretary from the sale of coins issued under this Act shall be promptly paid by the Secretary to the National Women’s Hall of Fame Foundation to establish an endowment fund that will provide long-term financing for the National Women’s Hall of Fame’s operations. (c) Audits The National Women’s Hall of Fame Foundation shall be subject to the audit requirements of section 5134(f)(2) of title 31, United States Code, with regard to the amounts received under subsection (b). (d) Limitation Notwithstanding subsection (a), no surcharge may be included with respect to the issuance under this Act of any coin during a calendar year if, as of the time of such issuance, the issuance of such coin would result in the number of commemorative coin programs issued during such year to exceed the annual commemorative coin