Most office supply stores like Staples, Office Depot or OfficeMax offer cardstock in a ream package. One ream should last you several sales. You must buy white cardstock. Also, we do not suggest 110 lb. stock – it is too heavy and can damage your printer if printing multiple pages. We do not accept regular 20 lb. copy paper because it rips and wrinkles too easily. We do not accept colored tags. If your items are tagged with 20 lb or colored paper, the items will be returned to you, or immediately donated if you selected that option.