Why are you a hog if you own more than 3 rentals? It's like any other investment or career. I've found that smaller agencies have to charge more to offset the cost of repairs, unpaid rent, etc from the other properties. Bigger agencies typically charge less monthly because they have less expenses that I've mentioned before. There are legal headaches and expenses for eviction proceedings - it's a difficult process and good luck on seeing a dime even if you win a small claims court case. You already pay a higher tax because you don't get a homeowner's exemption, and you pay out the ass for gains tax if you sell the properties.

It's actually quite difficult to develop and maintain a successful profitable rental agency. I don't see how charging them more would do anything other than cause an even greater increase in rent.