Fit & Fresh offers the Chilled 56-oz. Serving Platter with Insulated Travel Bag (pictured) for $29.99. Coupon code "DNBAGSET" drops it to $19.99. With free shipping, that's $30 off list and the lowest total price we could find.
Also available is the Chilled 10-Cup Serving Bowl with Insulated Travel Bag for $19.99 via the above coupon, with free shipping. That's $30 off and another price low. Both items feature gel-lined walls that stay cold after coming out of the freezer. Deals end August 4.