I’m not saying this to brag just to say that when you demand a months rent deposit, you can bet I’ll argue against that lol.  

Unlikely you'll be able to increase the price and get the seller to commit to paying them. 

The ball is in the seller's court now.

You can use Find the Seller or similar but they will cost you form $7.50 - $25 based on how many searches you pre-buy.

Becuase there is a cost for even using your own money or private money, you can actually offer the seller more if its cheaper to do subject to, and give that extra to the seller.

However, the sellers are looking for a hard cash transaction.

The seller can obviously keep whatever earnest money you put down.

LOL.. we had a rep.Although I will say in some areas of the country and this could be yours.. that there simply is no new construction so the inventory is the inventory and you do have supply demand issues and the only real new supply comes form older folks moving on and their house turns from owner occ to an investment home.. or burnt out landlord.. 

@David Montore, if there is an existing mortgage on the home, one creative financing method would be to  consider a seller finance contract for deed with wrap financing where you sell it for 10% or so higher than market,  get a nice down payment and make the monthly payments higher than existing, with higher interest.

Solution: Unless you are intimately familiar with the local market, demand third-party verification of the value of the property, ideally via an appraisal.In the event of a default, getting the property back might be a huge hassle - If your borrower does stop paying you, you're going to have to foreclose to get the property.