Buy one get one 50% off

I was at CVS today and i always scan when i go in and scan my CVS extra care card at their kiosks they have where you can scan your card and if you have any special coupons and offers it will print out for you right on the spot. And i had 3 come out one of which was inviting me to sign up to earn double rewards. Which is 4% (earning) between i think it was September 16th and December 16th. Anyhow i am already signed up. One of the coupons i got was for a $1 off Secret deodarant and they were promoting the new Secret outkast deodarant(S). I was excited... Well i get to the deodarant aisle and to my pleasant surprise i see that CVS is also having a sale on select deodarants etc. where you buy one and get the 2nd one for 50% off. The first one was $5.49 and the 2nd one was $2.75 and then you add a $1 off coupon. So with tax, the coupon and everything paid only $7.21 approx for 2 deodarants. Which normal price i would have paid at least $11 plus tax!!! SWWWEEEETTTT!!!!