Target offers the Zojirushi 20-oz. Stainless Steel Mug in Black, model no. SM-SA60-BA, for $28.99. Coupon code "CHAIR" drops it to $26.09. (Amazon charges a buck more, with free shipping for Prime members.) With free shipping, that's the lowest total price we could find by $7. It features vacuum insulation and a non-stick interior.