A number of LEGO sets are on sale at 20% on Walmart.com, including a few of the 2018 sets:
Pickup & Caravan (60182) https://www.walmart.com/ip/Pickup-Caravan/318373318 - $23.99
Forest Tractor (60181) https://www.walmart.com/ip/Forest-Tractor/800566857 - $15.99
Heavy Cargo Transport (60183) https://www.walmart.com/ip/Heavy-Cargo-Transport/558816826 - $23.99
Ambulance Helicopter (60179) https://www.walmart.com/ip/LEGO-City-Ambulance-Helicopter-60179/921869031 - $15.99
Dirt Road Pursuit (60172) https://www.walmart.com/ip/Dirt-Road-Pursuit/728108245 - $31.99
Mountain Arrest (60172) https://www.walmart.com/ip/Mountain-Arrest/661803182 - $47.99
Mining Heavy Driller (60186) https://www.walmart.com/ip/Mining-Heavy-Driller/855956399 - $39.99
Pickup & Caravan (60182) https://www.walmart.com/ip/Pickup-Caravan/318373318 - $23.99
Forest Tractor (60181) https://www.walmart.com/ip/Forest-Tractor/800566857 - $15.99
Heavy Cargo Transport (60183) https://www.walmart.com/ip/Heavy-Cargo-Transport/558816826 - $23.99
Ambulance Helicopter (60179) https://www.walmart.com/ip/LEGO-City-Ambulance-Helicopter-60179/921869031 - $15.99
Dirt Road Pursuit (60172) https://www.walmart.com/ip/Dirt-Road-Pursuit/728108245 - $31.99
Mountain Arrest (60172) https://www.walmart.com/ip/Mountain-Arrest/661803182 - $47.99
Mining Heavy Driller (60186) https://www.walmart.com/ip/Mining-Heavy-Driller/855956399 - $39.99