Rama apparently you're not to sure on this purchase any longer due to square footage discrepancy. Florida contract law states:
Lack of Mutual Assent
When both parties to a contract are mistaken about a fundamental element in the agreement and the mistake creates a considerable imbalance in the exchange, the contract is voidable by the party adversely affected. For example, a person makes a contract to purchase a car for $600; later, however, both the buyer and the seller discover that the car was once owned by Elvis Presley, presumably increasing the market value of the car. A court would probably permit the seller to void this contract due to an absence of mutual assent. However, where only one party to the contract makes a mistake, courts will enforce the contract, unless the non-mistaken party had reason to know of the mistaken party's misunderstanding. Courts will not permit the non-mistaken party to take advantage of the mistaken party using deception or artifice.
I f no cash has changed hands, why would you give them cash now? But for your benefit we rely on 3 different AVM's (Automated Valuation Models) to arrive at a price. We use BPO's for inspection and verification purposes. But if all are using the same information which they typically do, you will end up with erroneous numbers. Which in this case appears highley likely. Also understand, prior to financing an appraisal will be conducted which you will pay for, only to confirm that the property will not appraise for the price you are paying for it, thereby negating the subject to finance clause, if any on the contract. Have the bank re-run the AVM's based on the verified sqaure footage and the price will drop.