Mega Bloks 80-Piece Building Bag for $14.89! Reg. $25 May 14, 2018 by Coupon Caroline Leave a Comment This post may contain affiliate links or sponsored content. See Disclosure Policy. My kids love building and we love these Mega Bloks! Right now you can grab them for just $14.89 (reg. $25)! Great price and fun to keep kids busy for summer!