Sorry if i offend any doulas, but why do they cost so much??

When i was pg with Miss J, i had a trainee, so was free.

Then i began researching for a great doula to help birth Mr Z and was shocked how much a quailfied one cost.

In the end i did find an awesome doula but didnt charge me all that much as i was also helping her with the follow through program for her midwife course.

Yes they do a great job....but does the cost justify their services??

Again, sorry if i offend, just curious.