Maybe some day I'll learn to make my own.
They are extremely easy. As you know from your mother's preparation, you just rinse them, throw them in a pot of water to sit overnight, drain off the water and add fresh water or broth, put on a burner or in a crockpot and voila.
Of course, you can also add seasonings, chopped onion or pepper, tomato sauce, ham, etc. That means slightly more work but the actual cooking of the beans is pretty easy.