Update: X-Wing price has went back up to $49.97.
Amazon United States currently has LEGO Star Wars X-Wing Starfighter on sale for $43.87 (reg.$59.99). Savings works out to be 27% off. Free shipping and no tax for most states.
LEGO Superheroes 6860 The Batcave is also on sale for $54 (reg.$69.99) which works out to be 24% off. If you are into Architecture, LEGO Robie House is also discounted by 25% off for $149.97 (reg.$199.99). More of their hottest LEGO deals can be found here.