The fact that the listings says the loan is assumable gives some insight. My assumption is this is a VA loan and the buyer put little or no money into the deal. Probably got tired of being outbid for the more reasonably priced homes and went with an easy to close flipper property. I seen this first hand with some friends and co-workers that get tired and just settle and overpay. Like I have expressed before, probably got nice concessions towards closing cost (VA requires seller assistance). The buyer probably regrets over paying for the house and wants to start over or could be getting stationed somewhere else.