CVS: Unadvertised FREE Frito Lay Deal

CVS has an unadvertised deal on Frito Lay products this week.  Small bags of Frito Lay chips are 3/$1 or $.33 each.  Buy 3 and get $1, making them FREE!  The limit is 5, so here's what you can do:

Buy 15 Frito Lay Chips $4.95
Get $5 ECB
Final Price:  $.05 Money-maker!
Thanks, My Adventures In Saving!