Someone posted this elsewhere. Got me thinking of possible responses for the plumber:
Personally, I would go for #3.
It might look something like this:
“Interesting, I am actually looking for investment opportunities. How quickly do you plan on flipping this house? If it is soon, I would be willing to do the plumbing for no upfront fee in exchange for a share of the sale of the home. If it isn’t sold by then, you could pay me my regular fee plus a bonus for the delay.”
Whatever the outcome of that particular exchange, I might now have discovered a real market for such arrangements and start seeking out house-flipping partners where I contribute my services in exchange for a piece of the sale.
WHAT ARE YOUR IDEAS OF HOW TO MODIFY OFFERS TO YOUR ADVANTAGE?