That is truly amazing. What would the yearly mortgage on $500K be assuming $100K down? Something like $30K? And you get to use it for a little more than a month a year? You could spend that much time in a luxury hotel in someplace with warm blue water (like Hawaii or the mediterranean) for less than that AND keep your down payment. Or you could blow your down payment, spend more and enjoy your month dodging the bums and tweekers here in SD and swimming in the cold water. Totally stupid.