The average person probably hasn't heard of any of these designers, but then again the average person probably doesn't spend over $800 on a sweater, or over $1,100 on a winter coat, or even $900 on a pair of sneakers.
According to Smithsonian, the first well-known American depictions of Santa Claus emerged around the 1860s with political cartoons by Thomas Nast. In the following decades, department stores and food & beverage companies adapted Santa's image into their advertising, slowly crafting out the widely recognized white-bearded, rotund man in a fur-trimmed red uniform. Since Coca-Cola's ad campaign of the 1930s, which is credited as cementing the modern depiction of Santa worldwide, Old Saint Nick hasn't had much of a fashion upgrade.
On the Tumblr page, if you "pay with a tweet," you can get all the designer Santas to use as Christmas cards -- for free!