6pm offers the Fitzwell Women's Mentor/Wide Calf Boots in Brown for $50.99 with free shipping. That's the lowest total price we could find by $55. They're available in regular and wide widths in sizes 5 to 12, although not in all size/width combinations.
Street Moda via eBay offers the Lauren Ralph Lauren Women's Marion Wide Calf Leather Riding Boots in Brown, Black, or Onyx for $99.99 with free shipping. That's $70 off list and the lowest total price we could find. They're available in wide and medium widths and sizes 5.5 to 10, although not in all size/width/color combinations.