here's a way to think about property management fees

[Patrick Britton]

My "net" income for one of my rentals was $330 before PITI, PM fees ate $140 of that.

NET was reduced by 43%.  Consider that the next time you think someone else can manage better than you.  

[Eliott Elias]

This is how cheap investors who never scale think about property management. If that $140 saved me even an hour of my time towards managing the property it is worth it.