Although, you must check the actual value of the property. One shouldn't penalize a seller or buyer buy stopping a sale because a seller sold low and a buyer was going to make a profit. Take for example a seller who cannot make the payments any longer, is in danger of foreclosure. If the seller can sell and avoid foreclosure, isn't that a benefit? Should that seller and buyer be stopped from completing a sale? What would happen then? The bank, or the friends of the bank, will make the profit. Think about it.