Any future loans will not have this charge.

They charge % of revenue.

Property sold in 7 days, above asking price and the home was listed at the same price as the initial brokerage.These types of brokerages overwork their agents, pay less attention to detail and hiring, because if they don't, they'll never be profitable. 

They also did not charge any appraisal or other associated fees. 

Im worried im going to be spending a ton of time sorting these leads.The second option is AGENTPRO24/7 which charges me 25cents a lead but allows me to get more specific in criteria such as 40% equity and between 2-4 years delinquent.

It’s usually not cost effective to submeter the water and some states, like Mass, have strict regulations for charging water to tenants.  

Some lenders may charge a nominal amount to waive the account, but many do not.

New owner charges the tenant but the tenant claims the previous owner gave them permission.2.

I am currently making my way through Brandon Turner's property rental book and one of my questions is, during your analysis of the property and initial estimates- how do you account for property tax - or the potential for it to eat up your cashflow at some point?

He would either put up all the capital for the purchase & renovation, or he would provide the initial capital and the additional financing.