Amazon offers Prime members the Littlest Pet Shop Blythe Style Preppy Set for $2.36 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping adds $6.04.) That's the lowest total price we could find by $6. This set includes a doll, pet, outfit, Deco Bits, and accessories.
Orders placed via 2-day shipping by December 22 will arrive in time for Christmas. (This option is free for Prime members, but an extra $11.14 for everyone else.)