Amazon offers Prime members the Friis 16-Oz. Coffee Vault in Silver for $14.22 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $6.93.) That's the lowest total price we could find by $4, excluding the mention below. It includes a year of CO2 vent valves that help keep coffee fresh.

A close price: Walmart offers it for $15 with in-store pickup.