there would be absolutely zero money in it (see below) and the amount of people interested in stock look + increased caster could be easily satiated with offset moog uppers. if you're looking for more than 3* it's likely you're beyond stock appearing rim & tire combo, anyway.
all of this.
my back of the barroom napkin maths breaks down thusly: 60 for UBJs, 90 for some offsets, let's say you score a set of arms at the yard for 100. so you're 250 into a set before: cleaning, modding, painting, listing, selling (answering dumb questions), and shipping.
if your profit aim is 10 bucks and a burrito, then, sure i suppose it's worth it. but same as 72, i'm not gearing up to do even stock arms when you can get them (if available) at $250-- even though who knows what balljoints or bushings are in the arm. because people see "NEW" and $250 so why would they want to buy a set of "reconditioned" arms from me for 300? they don't know or care about the balljoints or bushings. they just see a new piece they can snap right on the car and get on with choosing rims or a chrome aircleaner or whatever.