Target is really ratcheting up the deals, so I’m going to list just a few.  I’d suggest clicking on any of them to get to the Target page and then price check against Amazon.  Between the two of them, I don’t know who sells out or changes prices more quickly.  The majority of these promotions are scheduled to end December 10; clearance goes through the end of the year.  Note that these links do not go to a specific doll (Barbie), but to the dolls section.

Disney Princess Toys – Buy One, Get One 50% Off
Barbie Toys – Buy One, Get One 50% Off
Thomas & Friends Toys – Buy One, Get One 50% Off
Shop Target’s Electronic Clearance Items During the Holidays
Shop Target’s Clearance Accessories Items During the Holidays