Selling a generic product for the first trial run

The main goal is private label but Im going all out on that for more of a long term approach.

I want to invest 1-2k for a generic trial run and I was wondering the best way to find products in that scope? Is low comp ( no brand / amazon dominance), and high demand all I need to find a good list of generic?

Should I look for under 500⭐️for the top sellers?