There is a new Purchase-with-Purchase (PWP) online for the Doodle Backpack Set for $14 when you spend $50. It ships for free (aka does not add to your shipping bracket costs). There is no expiration date that I know of mentioned. As far as I know this is available online only.
After spending $50, you can add it to your cart and it will automatically show the discount on this item.
Doodle Backpack Set:
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