The only boots I wear anymore are Danner. Great prices, but a very limited selection of sizes. 13's are out of luck.
Size 10.5 or 11 not available.
http://www.hitthebreakroom.com/big-savings-big-feet/dannerr-usmc-rat-hot-military-boots.html
Size 13.5 available.
http://www.hitthebreakroom.com/big-savings-big-feet/fort-lewistm-mens-womens-uniform-boots.html
Size 13 available
http://www.hitthebreakroom.com/big-savings-big-feet/mountain-light-overton.html
Size 13 available
Size 10.5 or 11 not available.