EDIT: $2 OFF COUPON HAS NOW EXPIRED
Amazon has 140-count Post-it 0.5" Flags (Assorted Colors) for $2.50. You can "clip" the $2 coupon on the product page and get the price down to only $0.50 (coupon is located under product description).Shipping is Free with Amazon Prime (free prime one month trial, student accounts available, And Amazon Mom accounts) or if you spend $25 or more.