Brownell's used to have a giant catalog, maybe they still do. Anyway, they had the obvious price listed as normal but in the description line they had a code that showed the gunsmith price. This was so a gunsmith (which I used to do and had a small-time business with FFL) could show the catalog to a customer and charge the customer price and still make a little off the deal. Items that would interest gunsmiths only, like most tools, did not have a separate price as customers wouldn't be buying tools for themselves. Just items that customers were likely to buy, gun parts, cleaning gear, etc.