Diet Pepsi 12 Pack Sale ONLY $1.66 at Target This post may contain affiliate links. Please see the full disclosure policy here. Posted on May 20, 2013 Written by Mary 3 Comments Diet Pepsi 12 pack sale at Target This week at Target, Diet Pepsi 12 packs are on sale for $2.75 each. Use your Target Mobile Coupon & new Cartwheel offer to grab a pack for ONLY $1.66! Diet Pepsi 12pk $2.75 Each -$1.00/1 Diet Pepsi, 12 pk Target Mobile Coupon AND use the 5% Off Diet Pepsi, Target Cartwheel Offer Final Cost: ONLY $1.66 for a 12pk!