Each special justice of the Supreme Court who is not a retired judge or justice or an active circuit or district judge, appointed under the provisions of the Arkansas Constitution, Amendment 80, § 13, shall receive, as full compensation for services rendered, the sum of one hundred dollars ($100) for each case in the special justice's or special judge's commission. When the case or cases shall be decided, this amount shall be certified by the Clerk of the Supreme Court after having been approved by the Chief Justice of the Supreme Court.