my first thought was "are you kidding me? i'm not spending all that extra postage just to have a cool stamp!" and then i realized that the stamps you could buy were really not that great. i like to create a visual package for the save-the-dates (and invites) that has a fabulous, cohesive look. and the stamp is definitely part of that look. so i decided it was worth the extra money. scan some fabrics or neat wall paper or gift paper and then add your own text or design. think of it as a mini art project and get the creative juices flowing. i got my stamps at Zazzle (love the name!). they're so cool.