I would avoid that snake. It looks underweight. If you are wanting a Blizzard, I would try posting to fauna and placing a 'wanted' ad in the corn snake section. Blizzards are not still entirely common and if you are wanting a white snake (warning, these guys can get yellow outlines to their markings!) you'll probably want to avoid a snow as they tend to stay heavily patterned and often get a peach-ish color to the saddles. I would also keep an eye out for any local reptile expos as you might get lucky.