Toys'R'Us is running a 20% off sale on Jurassic World and Minecraft Lego sets. It looks like they really jacked up the prices on the Jurassic World sets. Somebody remind me to check next week when the sales is over.
Target is running a 20% off sale on TMNT Mega Bloks sets. I can't find a better link because Target's website looks to be optimized for smartphones.