Property Manager Charges 10% markup for all service calls

[Allen Tracy]

My property manager charges 10% markup fee for all service calls.  So a $250 plumbing call turns into a $275 call.  Does that sound crazy or normal?  I already pay them a management fee, you'd think that would be included in that but maybe I'm wrong?  I pay 7% management fee or $55 a door whichever is higher so my lower income/rental properties are actually at around 10-11% management fee.  I would love to know your thoughts.