There's all sorts of brands like that on RockAuto for auto parts. FAMOUS BRAND is one. They sell $7 brake pad sets, maybe it's a brand that shouldn't be famous.
I suppose there could be business in procurement of "specialty products". These guys do all the shopping around or find someone to make that one odd part you need or figure where to get 50,000 packages of foobar and how to ship/store it while you continue on with your life.