Your negotiation elements are 1) the fact that the notice was short and you need time to rerent, 2) they got a better rate for 6 months than 4 months 3) the fact they prepaid meant somehow that there was no possibility for early termination.

Purchase price: $179,900*Estimated prepaid costs :$4,184.56Estiamted closing costs: $9,197.54Total costs (Add items : $193,282.10Prorations charged to buyer: -$528.66Loan amount: $134,925Cash from/to borrower: $58,885.76Does this seem high for closing costs and all?

But after I ran some numbers (these are only estimates) I would expect your closing cost to be closer to $5,000-6,000 (origination fees, appraisal, survey (if needed), closing, doc prep, attorney fees, flood cert, title, prepaid insurance/taxes/mortgage insurance, and initial deposits to escrow) Paying 15% of the value of the home in closing costs is pretty high.

All in, including prepaids I’m at about 4k

Paying all cash and then feeling like you have awesome cash flow is an illusion....you just pre-paid your cash flow and are paying yourself back

And I WOULD have filed an ADA complaint with the Department of Justice, a complaint with the local real estate commission, and a private lawsuit as well because I was already into the rental prepaid to $4000.I'm just glad I'm there now to protect my daughter from that kind of harassment. 

Closing costs of $4,618 are the following: Underwriting fee $495, Appraisal fee $700, Credit report $33, Tax service $109, Lender's title insurance $543, Title settlement fee $434, Recording fees and other taxes $300, Prepaid homeowner's insurance premium $780, Prepaid interest for 15 days $254, Escrow homeowner's insurance $130, Escrow property taxes $840 (we normally don't escrow anything, so that in itself is annoying).  

If you collect a certain amount of prepaid rent(someone has to confirm that amount) it can be required to pay interest on the advance rent portion. 8.

Seller To pay $____________  towards buyers borrowing costs and pre-paids. 

The terms are 30 yr fixed 5.375%.Here is the snapshot of the closing costs excluding prepaids/escrow.I confirmed with the lender that the appraisal fee is $700 (400 appraisal + 300 rent schedule).