Ala. Code § 40-12-101

Each person, other than the original bona fide owners, selling goods, wares, or merchandise as an insurance, bankruptcy, mortgage, insolvent, assignee’s, executor’s, administrator’s, receiver’s, trustee’s, removal, or closing out sale, or a sale of goods, wares, and merchandise damaged by fire, smoke, water, or otherwise, shall pay a license tax of $100. The provisions of this section shall not apply to sheriffs, constables, or other public or court officers or to any other persons acting under the license, discretion, or authority of any court, state or federal, selling goods, wares, or merchandise in the course of their official duties.