Staples offers its Return Address Stamp in five ink colors (Black pictured) for 99 cents with free shipping. (Shipping is only free if you upload your own image; otherwise shipping adds $9.95.) That's the lowest total price we could find by $9. Sales tax is added where applicable. This self-inking and customizable stamp has a 0.75" x 1.88" impression area. Deal ends February 2.
To add an image, select "Advanced Editing" on the customization page.