Amazon offers the Clarks Men's Stratton Limit Chukka Boots in Brown for $90.86. Coupon code "25OFFSHOES" cuts them to $68.14. With free shipping, that's the lowest total price we could find by $33. They're available in sizes 9.5 to 13.
Need them by Christmas? Orders placed by standard shipping today (December 19) are guaranteed to arrive in time. (Prime members can procrastinate until December 22 before ordering for guaranteed Christmas delivery.)