Once that process if complete we have a final negotiation and part ways or go under contract.

IF they don't, they force you to make conservative assumptions (e.g. expenses, capex, vacancy, etc.) and you end up putting in a lower offer.Another tactic / strategy is to simply give him his price (with the proper out clauses), get the information and then re-negotiate the price.

Most agreements have a window of a few days after agreement signing (or binding agreement date) for earnest money deposits to be made but it is something that can and often is negotiated.

Having done this, I find the back and forth to the traditional Real Estate negotiation antiquated. 

And if you present a great team, clean underwriting and a clear business plan you will be amazed at how much these banks will be willing to negotiate to get your business. 

The benefits are compounding when you have almost no money into the deal (sometimes a little as 3% of the purchase price and can even negotiate for the seller to pay some or all of the closing costs).

Say you had enough for 10% down on a good deal would It be wise to get private money for the rest (projecting a mortgage of 1500 and PML payment of 500 and cash flow 700/mo) Let’s say you have exhausted all friends, family, colleagues for that other 10%, are there private lending companies out there that would negotiate terms?

At the end of our walk-through he creates a sample invoice and show it to the seller, it helps generate a frame of reference of the actual value of the home and they become more understanding and willing to negotiate the best offer for everyone.

if you are basically buying 100 refrigerators you have negotiating power .  

Don't be afraid to negotiate!