Call it a win and move on. 

You get what you pay for make it a win win don't try and beat up your partners.

He gave me the opinion of value last week.Is there room to negotiate on this deal to make it a positive win-win for both parties? 

Learn more about the players.

I had thought this could be a win-win situation for both me and seller, however, I am not sure how I should plan on getting the funds to complete a rehab of the property.  

Real estate will win every time when you consider all the factors: cash flow, appreciation, tax write-offs, etc.My favorite book (if you can find it) is "The Unofficial Guide to Real Estate Investing" by Spencer Strauss.

Utilities costs (Gas, Electric, Water) for the past 6 monthsThis part of your motivated seller questionnaire gives you the information with which you'll be able to decide whether the property needs a short sale, whether seller financing is an option, and how to structure a deal or an offer that can work for both you and the homeowner.You'll also need this information to properly market the house to your investment property buyers.If you're a new real estate investor, I hope you arm yourself with the information on this page to work out win-win-win solutions for your sellers, your buyers and yourself.Motivated Seller Questionnaire Red FlagsThe power of the motivated seller questionnaire is that it helps guide your interview process, and gives you a framework to make the screening as conversational as possible (In other words, it's a script, without the mechanical sounding words and phrases).It helps you in the 4 following ways: Avoid Outright deception by prospective property sellers Properly screen your inbound leads for seller motivation Helps screen out irritable, irrational, potentially psychotic people you should never, ever deal with Helps you build rapport with target ideal candidates Supplies information to help structure your dealsAvoiding Outright Deception I've had a property owner tell me "..All the house needs is less than $5,000 dollars in repairs, and it's ready..." on a house that clearly needed so much work ($35,000 to $40,000 dollars) that no buyer or agent had ever called him back.Better Motivated seller screening Being a successful real estate wholesaler is a matter of alignment.

@Roy FurbertHappens all the time, you can file documents to fight it, sometimes you win sometimes you loseYour homeowners insurance is also going to be going up most likely as well

A home run would be cash flowing a house hack, but breaking even or paying significantly less is still a win. 

This is why I invest in smaller markets that don't have to worry about these massive players.