Free Head & shoulder's

So i went to cvs this morning to try the head & shoulder’s deal everyone has been bragging about and bingo!!! i scored 8 bottles free! I used 4 b1g1 mq from p&g and it took off $9.49 for each q. Then i bought 5 Garnier Fructis $2.99 each ($14.95) used 5 $1/1 garnier mq $5 off $15 purchase cvs coupon and $ecb i had $2.01 overage but my tax was $3.55 so paid $1.54 for everything and also recieved $5 ecb back for spending $15 on Garnier products