This deal has ended.
REI drops the [North Face Women's NSE Tent Mule Booties in Demitasse Brown from $45 to $19.93. Shipping costs $5.99, or choose free ship-to-store. Even with shipping, that's the lowest total price we could find by $14. They feature 450-fill-power goose down, EVA foam midsoles, nylon outsoles, and a "microbe shield".