A bunch of Lego sets on sale at Amazon, (Not the lowest prices on some sets, but still a nice deal) these are just a few:

LEGO City Trains Cargo Train 60052 - $144.99 (msrp $199) 28% off
http://www.amazon.com/gp/product/B00J4S6UYO

LEGO City Trains High-speed Passenger Train 60051 - $117.99 (msrp $149) 21% off
http://www.amazon.com/gp/product/B00J4S6PGC

LEGO CITY Prison Island 60130 - $71.99 (msrp $89.99) 20% off
http://www.amazon.com/gp/product/B017B1B2XE

LEGO City Police Swamp Police Station 60069 - $71.48 (msrp $89.99) 21% off
http://www.amazon.com/gp/product/B00NHQFTJQ

LEGO CITY Fire Station 60110 - $79.99 (msrp $99.99) 20% off
http://www.amazon.com/LEGO-CITY-F...B017B1ASVG

LEGO CITY Fire Response Unit 60108 - $31.99 (msrp $39.99) 20% off
http://www.amazon.com/LEGO-CITY-F...B017B1ALKY

LEGO City Square 60097 - $149.00 (msrp $189.99) 22% off
http://www.amazon.com/LEGO-City-6...B00WI0GEMS

LEGO City Spaceport 60080 $93.03 (msrp $119.99) 22% off
http://www.amazon.com/LEGO-Space-...B00WHZ5A3S

LEGO City Demolition Site 60076 - $72.41 (msrp 89.99) 20% off
http://www.amazon.com/LEGO-610027...B00NHQFECI

LEGO City Pickup Tow Truck - $15.99 (msrp $19.99) 20% off
http://www.amazon.com/LEGO-Great-...B00NHQFTEQ

LEGO Creator Lakeside Lodge 31048 - $23.99 (msrp $29.99) 20% off
http://www.amazon.com/LEGO-Creato...B017B1BEBE

LEGO Creator Changing Seasons 31038 - $39.99 (msrp $49.99) 20% off
http://www.amazon.com/LEGO-Creato...B00WI3FHMI

LEGO Creator Beach Hut 31015 - $23.99 (msrp $29.99) 20% off
http://www.amazon.com/LEGO-609999...B00NHQGGPC

LEGO Creator Toy and Grocery Shop 31036 - $31.99 (msrp $39.99) 20% off
http://www.amazon.com/LEGO-Creato...B00NHQGGNO