(a) Except as otherwise provided in subsection (b), in determining the value of oil and gas leases or properties the appraiser shall take into consideration the age of the wells, the quality of oil or gas being produced therefrom, the nearness of the wells to market, the cost of operation, the character, extent and permanency of the market, the probable life of the wells, the quantity of oil or gas produced from the lease or property, the number of wells being operated, and such other facts as may be known by the appraiser to affect the value of the lease or property. Whenever a change in any of the factors or figures used in determining the 8/8ths valuation of the production for any oil or gas lease or property is made pursuant to the tax equalization, tax protest or tax grievance proceedings, such change shall apply to the working interest, royalty interest, overriding royalty interest and production payments and, if applicable, a refund of taxes shall be made in the manner prescribed by K.S.A. 79-2005(l)(1), and amendments thereto.