This question does not necessarily go directly to the seller or the sellers agent. It is posted to a public board for everyone to answer. However, according to the MLS, the property you are inquiring about is a short sale so it would take the approval of the bank to finalize an accepted offer. You would need to make a formal bid to purchase so that there is an official contract and paper trail. As far as your concessions, sellers usually look at your offer as a package which includes price, concessions(amount and type), allocations of costs, type of financing, escrow time, etc.
If you would like to put in a formal offer in on this property, let me know.
Adam Dalton, Realtor
Century 21 M&M and Assoc.