Check out Children's Place. They are having their monster sale right now with LOTS of items from $4.99 plus if you use the code Santa20, it will give you an extra 20% off. If you shop through Ebates you will get an extra 3% back. If you are new to Ebates, you get an extra $5 just for signing up!
Shipping for Children's Place is $5 flat rate and if you order by 12/21 you will have the items by Christmas Eve!