He went front buying $250k in liens to buying essentially $0 in liens.

We all typically have  the main fees such as MLS dues, NAR dues (not required), a fee to hang your license (desk fee), continuing education fees, license fees, and a commission split with the broker. 

If you’re purchasing with financing, you’d have to find out from your lender if they’ll finance you initially at the $220k valuation - typically your initial loan amount is based on the purchase price not the market value.

When you're buying for $25-30k/door, that doesn't typically result in 700-credit score tenants.  

I typically buy and hold and am also looking to get into wholesaling.

Now I know this essentially grounds to allow the buyer to back out.

What is the typical rental cost for the plot/site that the mobile sits on and do you add that into the renters cost? 

What is the typical rental cost for the plot/site that the mobile sits on and do you add that into the renters cost?

GRM may be valuable to indicate value based on an Income Approach, but my understanding is that a Comparison Approach (comps) is typically used for 2-4 unit multi-family. 

That essentially means that you cannot use an SBA loan to purchase income property assuming all else is above board.