But then, you already realized this or you probably wouldn't be looking at this strategy.I tried not to make this post a "formula-fest".

The screener is built with the formulae for running the numbers to the point of Go/No Go.

Formula: ARV=NOI using actual rent amounts/market cap This gets me the retail value of the property if it were all fixed up and occupied and this number also equals my Option 2. 

I charge a flat fee for late charges based on a formula.  

Ben W suggested the classic MAO (max allowable offer) "formula" for making offers (70% x ARV - rehab = MAO) - always keep this formula in mind!.

Some formulas do not include all recurring costs while others include principal reduction and other such unrealized gains.

In my opinion, a wholesalers profit should be determined last in the MAO formula when concluding if a deal is worthy.However, I want to know how much profit margin a wholesaler should typically leave an end investor buyer?     

Tax assesment values: http://gis.vgsi.com/manchesternh/ You can then use this formula:(tax rate/1000) * ratio (2016 it was 96.8%) * assessed valueFor example: Tax rate=$23.14 per $1000.00 of assessed valuation.Ratio= 96.8%Assessed value=  200,000.00In this example(23.14/1000) * .968 *$200,000 = $4,479.90

But yeah, any feedback on this and whether I should repeat the formula would be great.  

There is no magic formula.