Amazon America currently has LEGO Star Wars 75004 Z-95 Headhunter on sale for $31.35 (reg.$49.99). Savings work out to be 37% off. As always, free shipping and no tax for most states on orders above $35. LEGO Architecture Leaning Tower of Pisa is also down to $25.99 (reg.$34.99) which works out to be 26% off. More of their hottest LEGO deals can be found here.
Remember that Amazon is also offering a FREE Gund Amazon Collectible Bear Plush (2013) when you spend $75 or more on qualifying toys including LEGO. Once you have spent $75 or more, just add the bear (reg.$24.99) and the bear will be for free.