May the 4th is Thursday of this week.
Toys'R'Us is running a $10 off $50 Star Wars Lego sets sale. They also have a 20% off Lego Marvel Guardians of the Galaxy sets sale.
Lego is running a "Free" exclusive R2-D2 polybag set with $50 Star Wars purchase sale. At least in the United States. Europe is having a much nicer sale.
Not sure if it's a sale, but here's what Target is listing for Star Wars Lego items.