It likely is out of date as to cost as this info is quite old (my guess is 5 years but it could be longer):- Rent Recovery Service: offers flat fee service starting at $20. 3 letters start at $30.

I have RentRedi charge them a late fee after the 4th day if rent is not paid.

Are you not charging the guests a cleaning fee?

It may sound nice to pay a 6% management fee but the extra fees can add up to be more than the other company that charges 10% with no additional fees.

A recent example, “How much is the monthly association fee?”

I.e. say your plumber has a fixed $150 service call fee.  

Quote from @Edward Toomey V: I switched from Quickbooks to RentRedi 5 months ago because the payment processing fee cost me $400 a month with Quickbooks.

I have heard so many people getting charged the "fees" for signing up for a free CD.

Or just pay your sister a finders fee for getting the deal?

A common misconception is that real estate properties under $1M have a smaller tax basis and therefore do not benefit from a cost segregation study due to the associated fees.