Mac has good tools and if your son is diligent, he could make a good living. I sold Mac tools in Southern NH and Mass, tell him to beware the deadbeat Masshole mechanics who like to buy tools but paying for them, not so much. I sold Mac in Dracut and Lowell area decades ago. Worked directly for the company for one year, did not own the truck or route. Sales were good, made money, but I went back to my other preferred work. The key to success is showing up religiously and standing behind your word and product. Great job, chasing the deadbeats however absolutely ***** and the tool salesmen do have to put up with lots of that.