Pros
The pros are it's a private owned store so they are lax about many things, taking days off, learning the curves of selling, and great 1v1 teaching(management is great). It benefits the owners directly depending on how you operate, if you do well they treat you well, if you don't, don't expect the best. You get what you work for. Small bonuses at the end of the year. Great for highschool students, not so good for a career.
Cons
No room for promotions, no raises per year/semi-annual/quarters, no paid time off, no holiday pay, no incentives for selling, no benefits(unless you're full time). Of course all of these depends on your area/store and depends on the owner if they want to give incentive for selling. I've seen the numbers/profit rise over the years I've been with them, never once have I've seen a raise even when I asked for a raise, it was never given.