Walgreens: Cheap Sally Hansen Nail Polish with coupons!

All month long at Walgreen's there is a Register Reward for Sally Hansen Nail Products.
It looks like this:

Sally Hansen Nail Polish $2.99 (prices may vary)
Buy 3, Earn a $5 Register Reward (good on your next purchase of SallyHansen)
Use 3 $1/1 coupons from 8/2, 8/23
Final Price OOP: $5.97

BUT! It gets even better! According to Hip2Save, this deal is rolling!! Meaning, if you do the transaction as outlined above, and then grab 3 more polishes and pay for those 3 with the RR from the first transaction- you will get a new Register Reward!!

So it will look like this:

Transaction 1:

{BUY 3} Sally Hansen Nail Polish $2.99 (prices may vary)
Buy 3, Earn a $5 Register Reward (good on your next purchase of SallyHansen)
Use 3 $1/1 coupons from 8/2, 8/23
Final Price OOP: $5.97
After you pay, you'll receive a $5 RR

Transaction 2 (and 3,4,5, ect):

{BUY 3} Sally Hansen Nail Polish $2.99 (prices may vary)
Buy 3, Earn a $5 Register Reward (good on your next purchase of SallyHansen)
Use 3 $1/1 coupons from 8/2, 8/23
Use the $5 RR from the previous transaction.
Add in 1 filler item (so that you have more items than coupons and register rewards)
Final Price OOP: $.97