I'm a firm believer that if you drop any money on a Halloween costume it should only be on things that you're going to wear afterward, too. I'm also a queen of the last minute and just now getting serious about it. I'm considering going as something really traditional—like a ghost or a witch, but a really good ghost/witch—and these shoes totally fit the bill and certainly qualify as something I will wear long after the fact. They're even listed as "white witch" boots on Maiden Rapture Vintage's Etsy site.
Ooh, I love! They're like a much more affordable version of these. And they're in my size. Back off. I'll cut you!