Amazon America currently has LEGO City 4436 Patrol Car on sale for $9 (reg.$11.99). Savings work out to be 25% off. Free shipping and no tax for most states.
They also got the online exclusive LEGO 10224 Town Hall slightly discounted for $177.99 (reg.$199.99), which works out to be 11% off in savings. More of their hottest LEGO deals can be found here.