I work Central Florida, So I have NO incite into this property, but IN GENERAL,
Listing price is just that, just like a auctioneer saying - who will give me 139,990????
you Bid $ 100,000 . . .. he says " I have 100,000 who will give me 110,000?"
Its just a starting place.
Sometimes, however, it is final. This is on REO properties when banks have "BPO's" done to establish current market value, and tell listing agent, put this on the house, its what its worth.
Still, you a buyer are in charge of the offer. If bank thinks it's worth 139,900, you are free to offer what ever you feel its worth. If you can back your value with BPO's or appraisers, you might be able to move that price.
Looks like the county thinks in Jan 2010 it was worth $112,890 - at least here, a property would (most likely) be worth less in Aug 2011.
This is very tricky business - Suggest you find a good Realtor to help you through this - Buyer agent should cost you little to nothing to have them help you all the way to closing. If you need help finding one, I am from the area and know many fine agents is Broward county.