Amazon offers Prime members the Disney Frozen Little Kingdom Arendelle Treat Shoppe, model no. B51950000, for $8.41 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $6.25.) That's the lowest total price we could find by $13, outside of the mention below. It includes a 2.5" Elsa figure and an assortment of accessories and snap-ins.
A close price: Walmart has it for $9.11 via in-store pickup.