Amazon offers Prime members the Barbie Fashionistas Doll 4-Pack for $19.52 with free shipping. (Non-members can get free shipping with orders of $35 or more; otherwise, it adds $6.62.) That's the lowest total price we could find by $15. It includes Barbie, Teresa, Raquelle and Nikki dolls. Orders placed via Prime by December 22 are guaranteed to arrive in time for Christmas.