For Prime members only, Willow & Everett via Amazon offers two Willow & Everett Moscow Mule Copper Mugs with Shot Glass for $25.99. Coupon code "WW2KQFYS" cuts that to $15.99. With free shipping, that's $10 under our mention from three weeks ago, $54 off, and the lowest price we've seen. This set comes with a cocktail recipe eBook.