eBags via eBay offers the Travelers Club Luggage 30" Multi-Pocket Upright Duffel in Black, Green (pictured), or Red for $28.99 with free shipping. That's the lowest total price we could find by $11. It measures 30" x 13" x 12" and features a retractable telescopic handle plus protective padding.

Update: The price has dropped to $26.99.