Trident and Stride gum packs are on sale at Walgreens, three for $2.00. Plus, buy three packs and receive 2,000 Balance Rewards Points. The Points are equal to about $2.00 which can be redeemed on a future transaction. After the sale price and Points, each pack of gum is $0.44!
Note: My store did not have the sale price on the gum tags, but you can find it advertised on the last page of the weekly ad. These ads are usually found in-store by the front entrance.