Remember that pricing on Amazon is subject to change at any time.
Amazon just dropped the price on the LEGO Classic Mission to Mars Set to under $36, which is by far the lowest price it's ever been at! It has excellent reviews, and ships free with Amazon Prime or Free Super Saver Shipping.
Go HERE to check it out!
LEGO BrickHeadz Mr. & Mrs. Claus – Under $16 Shipping is free on orders over $35, or adds $5.