They can take care of a lot of the monotonous tasks, and even do things like send leases, screen tenants, add rent charges, pay utility bills, the list goes on. 

Are their listings detailed with good quality photos?

Quote from @Ariel Rivas: I don't know your market specifically, but it's typically cheaper to purchase those items at Home Depot or Lowe's.

I purchased a duplex in the Mt. Pleasant area of Cleveland in 44120, and had some decent tenants that are vacating the property. I'm not sure if I'd like to take a chance in sourcing new tenants in the area and hoping...

Ken McElroy, on the other hand, is listed as CEO and Principal of MC Companies, which I have heard good things about.  

Whereas the cap rate on active listings are 5, 6 range.

Only two electrically operated items may be plugged in to any electrical receptacle.

On Page 134, he lists the following when analyzing a deal:Sales Price: $132,490.00Sales Expenses: $17,000.00Loan Balance: $55,004.72Total Invested Capital: $35,950.00Profit: $24,535.28I agree with his thought process here when he calculates net profit, but I'm trying to verify the net profit by adding up all the sources of income over the past five years in his example by doing the following:Appreciation over five years=$12,490 (see chart on Page 133).Cash flow ($297.73x12x5)=$17,863.80 over five years.Loan paydown: ($60,000-55,004.72)=$4,995.28 over five years.Sales Expenses are still $17,000.Doing the math, profit= $12,490+$17,863.80+$4,995.28-$17,000=$18,349.08There is a $6,186.20 difference from the net profit he calculates.My question is: Is this $6,186.20 difference due to the forced appreciation gained in the property from the rehab he does in this example?

@Jackie Liu I have a table in my lease that lists all the utilities and then they are marked as to if the tenant pays them or the landlord pays them.

The cap rates seem to be inconsistent and not aligning with really anything...3% to 5% on older buildings with higher risk, not great tenants, in not great areas and not a lot of cash flow or even negative cash flow based on current listed price.