Amazon America currently has LEGO City 60130 Prison Island on sale for $68 (reg.$89.99). Savings work out to be 24% off. They also got LEGO Star Wars 75153 AT-ST Walker down to $31 (reg.$39.99) which works out to be 22% off.
If you are Prime Member, they also have a few exclusive deals including Battle on Takodana for $35.53 (reg.$59.99) and Eclipse Fighter for $20.99 (reg.$29.99). Respectively, savings work out to be 41% and 30% off.