The 70% rule states that I'd you take the property's ARV, multiply by 70% and then subtract rehab costs, you have a rough idea of what you can pay for the property.

I know I need to figure the ARV, then subract the repairs, then subtract my desired profit.One of the problems I’m having is I don’t know what the ARV should be without bugging a realtor for each of hundreds of properties.

If I subtract the judgement amount from the assessed value I might have something resembling an equity estimate for each property.

After reading BP books we failed to subtract all the other items...

From that you subtract all your costs associated with running your wholesaling business. 

Subtract from that $500 your expenses on a property and you will have negative cash flow from the property itself = liability.One could give a value of zero to your cash to artificially increase the cash flow from the property but what investor would place zero value on their cash.

In other words, they are going to take 75% of each rental property's rental income, subtract the PITI payment from that, and then add what's left to your income (or to your debt if it's negative). 

I’m comfortable buying a 2% property if rent ready, subtract the conservative 100k and I think at 400k these would cash flow and be a good investment.

Find out what the value is based on actual performance and subtract the deferred maintenance on the property.I would not forget about it.  

Management fee is an operating expense and subtracted from gross income to derive NOI.Gino