I know we've got about 359 days left, but I don't think anything will top this.
Winn Perry has reduced the price of this gorgeous (I know, I tried it on) wool-cashmere Mjolk coat from over $800 to only $253. That's not cheap, true, but this is a quality, classic piece you'll keep forever (more on that sentiment later).
As of Saturday, they had a full range of sizes. Keep in mind that it's a rather slender cut—I usually get swallowed up by coats of this style and end up looking like Mickey Rooney, but this one actually made me look taller and slimmer.