+1 on this. Also, thighs are pretty good value too, and not filled with water to bulk them up. Thighs are fabby for casseroles and curries, and boned out, make cracking schnitzel.
Cheap chicken breasts (and the same applies to cheap wet-cured bacon) are a false economy anyways, as you get so much shrinkage during cooking due to the added water. Going on the cooked weight, it's actually much of a muchness with the better quality / higher welfare.
Yes I should really remember to get thighs more often as most of our chicken use is curries and stir fr.