Home Depot offers the Weber Rapidfire Chimney Charcoal Starter for an in-cart price of $12.98. (Amazon offers it for the same price.) Opt for in-store pickup to avoid the $5.99 shipping charge. That's the lowest price we could find by $2. It measures 7.5" x 12" and purports to quickly produce hot coals for cooking.

Update: It's no longer available at this price at Home Depot; however, Amazon still charges $12.98 with free shipping via Prime.