Code of Alabama — Title 40 (Revenue and Taxation)
Ala. Code § 40-12-67 — Brokers and Agents of Iron, Railway, Etc., Supplies
Each person, other than a merchant paying an ad valorem tax on his stock of goods, who shall as agent or broker sell iron, railway supplies, furnace supplies, or mining supplies, shall pay a privilege tax of $25.
Source: official text