In all cases of conviction there shall be taxed against the convicted defendant, as an item of cost, the sum of Three Dollars ($3.00), which shall be turned in to the county treasury as a part of the general county funds; however, the Three Dollars ($3.00) shall not be taxed in any case in which it is not the specific duty of the county attorney to appear and prosecute.
From and after October 1, 1993, in addition to the salaries provided for in this subsection, the board of supervisors of any county, in its discretion, may pay the county prosecuting attorney an additional amount not to exceed ten percent (10%) of the maximum allowable salary prescribed herein.
In addition, such county prosecuting attorney shall receive the sum of One Thousand Five Hundred Dollars ($1,500.00) per month for the purpose of defraying secretarial expense.
Miss. Code § 25-3-9