Most people understand the concept that a person won't be in business long if working for free.
If they want your work without giving their money - ask if they're willing to barter, as in - it's time to have your windows washed, whatever. If they're not willing to barter ---- then they're just cheap.
We run a store, and had to do the same. We've not lost any family over it. We have lost family over the jw shunning.......but then, that's God speaking.