I googled this:
women's plus calves size snow boots
And got a lot of boots showing that lace up to fit. Fur lined, quilted, thick tops, etc....
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These are all wonderful boots, expensive but gorgeous. My granddaughter loves the bright pink ones.
http://www.zappos.com/sorel-women-boots/CK_XARCz1wE6ArcVU...
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Here's at least 5 pages of plus size calf snow boots. The first couple are only about $50 and look very similar to the ones you showed.
http://www.beso.com/plus-size-snow-boots/search
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These go up to size 11 and they have many sizes left.
http://www.ebay.com/itm/like/261318077588?lpid=82
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