I must admit to handing a card out occasionally and asking for a call when some real work comes along after resetting breaker or GFI.
Usually, I try to explain it, if they can fine!
If they can't =$$$$, unless of course your 501-C??
A lot depends on the situation....
1)little ol'widow, fixed income, 64' plymouth w/ 30K miles, 3 legged dog (that's worried)
2) Daddy Warbucks, could give a rodents rearend to even check