You can't negotiate directly with a real estate agent about hourly rates because that's up to their brokerage.

The "variables" you speak to could mean this is worth every cent of a 5.4% cap rate to "I wouldn't touch this for a 12 cap".  

My suggestion is to find some real estate industry surveys (via CBRE or others) and look for the MF cap rates in various cities/states/regions.

There’s almost always a rate at which it just doesn’t make sense.

Quote from @Joy Daniels: I manage short-term rentals in the Sarasota area, and I'm always looking for innovative ways to boost occupancy rates year-round.From your experience, what marketing strategies have had the biggest impact on keeping your properties booked?

I’m having trouble determining the correct monthly rental rate for my property.

With a low 4.75% rate but minimal cash flow ($50–$125/month), your equity could likely work harder elsewhere.

I'm constantly juggling the rates for my Airbnb listings based on what my competitors are charging. 

Quote from @Dinesh Nair: I am a Canadian investor with a US corporate entity- we closed on our first property and now working to find financing through a lender… however rates keep changing all the time.. is there a site to track rates ? 

Rate is a function of price.