Better than free Reach Toothbrushes at Walgreen's

I am posting this deal and hoping someone will have better luck that I am having finding these! I have checked 3 Walgreen's and they are sold out (not even 1 on the shelf) at all 3.

Buy 4 Reach Toothbrushes - on sale this month for 99 cents each

Use 4 - $1/1 coupons from 4/17 Smart Source

OR Use 2 - $2/2 coupons from 5/5 Smart Source

All four toothbrushes are free

BUT - it gets even better:

Buy 2 Reach Toothbrushes - get $1 Register Reward

Buy 3 - get $2 Register reward

Buy 4 - get $4 Register Reward

So if you are able to find 4 and have all the coupons, this is a $4 money maker!

good luck! If you are in the St Louis area and find them - let me know where ;-)