I was in the Olean, NY Walmart today and spotted coupons for $1/2 bags of Doritos. The Doritos coupons were on a four sided display on the subway side of the store.... They may be available in other Walmart stores!
It isn't very often that I see Doritos coupons so I was pretty excited about spying them! If I remember correctly they were on sale at Walmart 2/$5 (but don't hold me to it)! The coupons are valid 06/11/2011 thru 07/13/2011!