Some Buyers have an unrealistic idea that they can visit Florida for a week and actually buy a property--especially if they include Bank Owned/REOs and Short Sales in their search.
Even if a Seller on a Short Sale accepts a buyer's offer, it may not be in the realm of what the lender will allow it to sell for so you may not find out the "true" required price for several months.
On REOs you may not even find out if you were the winning bidder amongst the many, many bidders for a week or even as long as two weeks.
Also on regular sales, you can spin your wheels making unrealistic lowball offers but offer too low and an emotional Seller will probably not even want to sell you their house and may even sell it for a lower price to a kinder, nicer buyer that doesn't submit an abusively low initial offer. I try to counsel my Sellers not to get offended when a buyer wastes their time (and my time and the buyer's realtor's time) with an absurdly low offer and we try to keep the ball in play.
Whether a Realtor is a Transaction Broker or a Buyer's Broker will not make a difference if a Buyer's offer isn't in the realm of being acceptable. Some buyers may blame a Realtor for not being able to get an offer accepted that is well under current market value but it's the Buyer's decision how high or (absurdly) low price he wants to offer.
With the REO Initiative about to happen soon, there may be significantly lower inventory of properties so if a buyer think he'll get a better price in a few months he may be sadly mistaken and will have missed the boat.
Also... on a condo, you may need 100% CASH or at least 25% down unless it's one of the very few complexes approved by HUD or it's owned by Fannie Mae --you can get a those for only 3% down as an owner occupant.
All the best,
Alma Rose Kee