This week’s Walgreens ad has Rice Krispies on sale $1.99 each. You can take your Walgreens ad into any Target store and they will match that $1.99 price.  Plus, you can use the below coupon in addition to the price match:
Buy 2 Rice Krispy Cereals, get a FREE 10 – 10.5 oz Kraft or Market Pantry Marshmallow, Target coupon – (target.com)

Buy 2 Rice Krispies Cereal $1.99 each
Buy 1 Kraft or Market Pantry Marshmallows

Use $2.00/2 – Rice Krispies Cereal – (coupons.com) available to zip 90210)
And use Buy 2 Rice Krispy Cereals, get a FREE 10 – 10.5 oz Kraft or Market Pantry Marshmallow, Target coupon – (target.com)
Final Price: $0.67 each, when you buy all 3

Thanks ChiTown Cheapskate!