I was in two Target stores in Chicago last night looking to see what they had for their summer clearance. The main find I saw at one store was the GotG 76021 - The Milano Spaceship Rescue on clearance for $52.48 or 30% of MSRP. I was very happy to see this as I was lamenting possibly paying a lot for the Gamora figure by itself which was the only one I absolutely wanted. No other GotG sets were on clearance. This Target had the movie sets 15% off as part of their weekly sale, not on clearance.
The other Target store I went to had no GotG sets on clearance. However, it did have the Target exclusive movie set 70812 Creative Ambush listed as being regularly priced at $29.99 with the weekly sale of 15% off in effect for a final price of $25.49. Since MSRP is $39.99 this works out to approximately 36% off.