In 2004, George Boedecker, Jr., and his business partners got the proprietary rights for a foam resin they decided to turn into candy-colored, unabashedly hideous spa footwear. Nine years, one beleaguered independent public offering, and well over 200M pairs later, Boedecker has made his millions with Crocs, but is now ready to forfeit the Boulder, Colo., penthouse he bought in 2008. Listed in for $4.3M—that's the value of roughly 143,333 pairs of Crocs, as Realtor.com points out—Boedecker's pad offers 3,736 square feet of the "absolute pinnacle of Boulder luxury living," with heated hardwood floors, custom cabinetry, and "an abundance of windows." It sounds nice and all, but it comes at a (literally) high cost; the median list price for Boulder is $358 a square foot. These digs? $1,150 a square foot, more than three times the median. Have a look, above.