For in-store pickup only, Kmart offers the Northwest Territory Lightweight Sport Chair in Blue (pictured) or Red for $7.19. Coupon code "KMART10PSAVINGS" cuts it to $6.47. That's the lowest price we could find for such a chair by $6. Sales tax is added where applicable. It features a steel frame and built-in cup holder and comes with a carry bag.

Update: The price has since risen slightly overnight to $7.99 before the above coupon, $7.19 after.