Not sure when they are going to pull the coupon code, but Barnes and Noble has a 40% off coupon code for one item available right now.

code: LMQCJGX26KQFK

Select items excluded (ex; LEGO, Gift Cards, NOOK Devices/Books)

Free shipping over $25

Slickdeal link for more info: http://slickdeals.net/f/9070799-barnes-noble-40-off-one-item-coupon-code-free-shipping-over-25

I'm eyeing another set of Magnatiles...