And here's a Patreon Suggestion for Polaris_bot of his Gengar OC Julius dealing with a customer whose debts to his shoe and sock shop are too much to pay off in cash, so he finds...other ways of paying his dues.
Thing is, all of Julius' sock and shoe goods are magically designed to increase the size of their wearer's feet with every use, thus requiring them to return to the shop to buy increasingly more expensive and larger sized shoes/socks. When they can't pay their dues, they become merchandise themselves...
...AFTER a good stretching, of course.