We are so confident that you will fall in love with painting with the Accubrush, that we are offering to let you buy one and try it out FOR thirty days! If during that time, you don't find that the Accubrush is an indispensable part of your painting tools, just return it for a refund. We are confident that you will keep it around to use and lend to friends, and you will become one of the thousands of users who simply "can't paint without an Accubrush."