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A situation in which a potential buyer of real estate revises his/her bid for less money before the transaction is finalized. For example, if one originally offers $200,000 and the seller accepts this, a gazunder occurs when one reduces the bid to $175,000. A gazunder is risky because the seller is under no obligation to accept the gazunder. Generally speaking, a gazunder occurs when the buyer is confident that the seller will accept the new price, especially when there are no other potential buyers and real estate prices are crashing.
An action by a buyer to lower the offer for goods or property after the seller has already mentally spent the purchase money and is emotionally invested in a sale at that time,but immediately before the paperwork is signed. Contrast with gazump.