I offer either 10% monthly and manage everything including accepting rent and paying owners, or on call management. 

As rent has become more expensive more households are coupling via roommates, moving in with a partner, etc.

The tenant is expected to notify you, and maybe they will, maybe they won't.Because they have nowhere else to go and no funds (and usually no job),  you'll be paying for an eviction. 

It seems like that they do not want to pay for the 45 dollars to go through it.

Hi all, I'm looking at some single family properties in the area and there is one for sale that says the current tenants are paying $500 below market value.

Landlords are asking high rents to help cover their increased operating expenses, mainly property insurance, which high skyrocketed over the last few years in FL, especially in the areas that you are looking near the beach.

There are some that manage to find the money and the deals quickly when the market is just right (and they have plenty of cash), but most success is built slowly, over time.Increase earnings, reduce expenses, save up, invest.

Buy now, instant appreciation with value continuing to rise, cover my expenses, and refinance down the line when the rates do drop, having already secured myself a valuable property!

Also, I will be paying his commission because I want these units rented asap. 

You can call it 'overpriced' but others are willing to pay it, so I'd focus on finding the best deal you can find in your area, and not on a CoC return rate that may not be realistic these days.