Yoyo.com currently has a coupon code for Buy 1 Get 1 30% off. You can maximize your savings up to 15% off by purchasing sets of equal value. Note that some sets have already been reduced. Use coupon code LEGOBOGO30 to redeem this offer. As always, free shipping on orders above $35. Thanks to forum member exciter1 for the news.
*Coupon is valid until June 18, 2013.