The seller pays the fees anyways. 

You will then pay 2 sets of annual fees, both MA and RI.  

I have nearly all of my closing costs accounted for but am missing the estimated Title company's escrow fees and other recorded fees, which are split 50/50 with the seller.Could anyone help me get an idea as to how much this would cost?

No cam fee is charged.

Definitley will try to work with them to avoid more money spent on legal fees and time wasted.

I bought a condo there and when I sold there were all kinds of people holding their hands out for transfer fees.

How do closing costs and other fees affect my profit in these types of transactions?

They are very low fee and readily available to even the smallest of investors.

But, I will take 10% off the top as a fee for "lending" him half of the total investment.

I'll get my deposit back, but I have at least $2k in other fees (appraisal, home inspection, legal, etc).