My guess is the 10% mark up because that's far less than any reputable GC will charge for their services. 

We also have an operating agreement that states that I will be handling the daily operations and I'm basically in charge of the whole business.

I can only see the benefit of forming a self performing property management company if you believe you can be more effective on cost and service than the local 3rd property operators and even cost can be tricky to calculate because most focus on the management fee that's charged rather than the cost to put out fires when they do arise.

Find an Ohio lawyer to not only defend you on the government charges but to go after the contractor.How much real estate experience do you have?

She apologized but did not rebate any of the fees which when I require a second visit I get charged (and she did charge me for a second visit because some railings were down at the powder coat on her first visit). 

You get your question/offer to your target much faster.2) Much faster.

An agent can provide information and guidance…an investor is still in charge of making the decision to buy or not.

We have even gone so far as to get the movers--all of which is cheaper and faster than an eviction. 

For instance, foreign real estate depreciation is generally spread over 40 years, which differs from the faster schedules used in the U.S., and the ability to offset W-2 income may have limitations due to the passive activity loss rules.

But upon looking at court records this person has multiple driving violations and charges of criminal trespassing.