My local store is my lumber yard, paint store and hardware... mom and pop.. and yes they are an Ace affiliate. but they carry stuff that is not in the "ace warehouse" they have the options to drop ship brands that are not most Ace's do not carry. Ia m sure that what your Ace is doing with Mythic.
I get, Cabot, PPG, Sikkens, P&L, Zinsser, Zar, and most other name brands, and having a good relationship with owners my discount is just as good with using any other store. and if I pay a buck or two more for something I am helping out a small biz... just as I am