I am reminded of a story told me by a retired builder:

It seems his wife got tired of the fact that he never got around to
any of the repairs required to their own home, so in exasperation she
'phoned another builder for a quote. Naturally, the person who
answered the call was the other builder's wife who said she had the
same problem. So they agreed to do each other's repairs as normal work
jobs, an arrangement which lasted for years.

Chris