Is there any precedent for realtors or other placement services charging a flat fee instead or half month rent?

Flat fee MLS listingI am thinking of adding4.

Examples are as follows:5-4-3-2-1 (Stepdown in %)Flat 55555 (5% for all 5 years or 3 years (5-5-5)6 months of interest pmts on 80% of the loan balance (hybrid penalty)your PPP choice directly impacts your rate and DSCR so be sure to weigh out these factors altogether. 

After the market crashed in 2008 we went on a buying spree from about 2009 until 2015/6 (buy & hold) until the numbers didn't make as much sense as the prices started creeping up again, rent prices were flat and many competitors started entering the marketplace.  

Flat rate of $800/month to a bookkeeper that specializes in real estate.

The property has a large 2-flat main building (3 fully finished floors and partially finished attic) and a large 5 BR coach house.

Hello,I am remodeling my multi family house (3 flats) to modern.

As of now utilities (electricity, water, gas and sewage) are a flat rate of $100 per unit which is tacked onto the rent.

In my market, many investors aren't using agents except for commercial deals and often result to selling via flat fee broker MLS listings. 

The insurance carriers flat out do not want much risk.