about 8 years ago I did an exercise to value my time, and it included:
- how much could i make by working an additional hour (salary + bonus) so not a real clear calculation
- how much would I pay for an extra hour of free time
- how much would I pay for extra time with my wife and kids
I use that metric for almost everything
cleaning
mowing
that flight out to that costs $100 more but is better for my schedule
In general most of the prices are the same, I find the quality is better with a person over a service but the risk is higher not using a service. Also if you government clearance doesn't allow for close contact with non residents then a service is your best option.