Ending today, Crocs takes 25% off sitewide during its Presidents' Day Sale. (Discounts apply in cart.) Shipping adds $4.99, or get free shipping on orders of $24.99 or more. A couple of best bets, with prices after discount and $4.99 for shipping:
Ugg Closet offers its Ugg Australia Men's Merrick Boots in Black or Stout for $132.99. That falls to $113.04 in-cart. With $8 for shipping, that's the lowest total price we could find by $6. They're available in sizes 7 to 15, although not in all size/color combinations.