One of the great things about them is they charge by the month and you can change your policy and terms on a monthly basis also.So, yes, you'll pay a higher premium for any month(s) the property is vacant. 

Are there ways to automate the payment process of monthly charges?

Would you charge them to move the provided fridge out and back in again after they move?

Rather than sharing a commission, the agent is just reducing what they charge.

New water heater, new stove, new fridge, numerous repairs, and a water leak emergency that I should have fixed on my own but went with a company who charged me $700 to fix something I could have done myself for basically free.Now, I probably have a bit of a crappy house with all the things that have gone wrong with it, but I also had super conservative estimates behind my CAPEX and maintenance.

What is the rent you're charging for this one

You can hire an electrician to install GFCIs, and charge the tenant if they would like.I would have a plumber address the leaks as soon as possible.

I mean most places charge $200 just to show up then the rate on top.Take the disposal out and just pipe it normal.I remember my landlord replacing mine often in college.  

You must continue to pay the rent on time per lease agreement until the property is rented to a qualified tenant plus you will be charged for any fees associated with leasing, showing the property, etc."

There was a recent post here about a guy complaining about how much his property manager charges to send a letter, $45, 20-some posters chimed in that it was crazy and a rip-off, and then finally one of the most experienced property managers here explained that the price charged really involved personally sending certified mail from the post office, actually scheduling a trip involving the inevitable waiting period for getting it done, tracking the return receipt, logging all the information for use later in court if necessary.