Moutop via Amazon offers the Mouttop Christmas Fashion Jewelry 24-Day Advent Calendar for $24.99. Coupon code "ZTYSFANN" cuts that to $12.49. Plus, Prime members bag free shipping. That's the lowest price we could find by $13. It includes 22 charms, a bracelet, and necklace. Deal ends December 24.

Note: This is marked "100% GRINCH PROOF", although they seem to have mistaken robbery for quality assurance. Essentially, this could still be taken by the mischevious outcast of Whoville.