Yoyo.com currently has a coupon code for 20% off (max $40 discount). Use coupon code MEMORIALDAY20 to redeem this offer. As always, free shipping on orders above $35. Thanks to forum member beartrapper25 for the news.
Note: The coupon code is not stackable with already discounted items. However, its still a great time to pick up some of the new sets like Lone Rangers and Superman!