Back to CVS folks! LOL This is UNADVERTISED so it will not be in the ad but we know about it now! If you have some left over ECBs you can use them to pay out of pocket and get an ECB back. Looks like it is a limit of 1.
Buy (1) Viva Vantage Choose a size single roll paper towel $1.99
Get Back a $1.99 ECB (Limit 1)
Final Price: Free!