That Daily Deal offers four Silver Buffalo Harry Potter House Crest 14-oz. Mugs for $19.99 plus $4.99 for shipping. That's $14 under the lowest price we could find for four mugs elsewhere. Deal ends May 14. Buy Now Features Microwave- and dishwasher-safe One mug each for Gryffindor, Hufflepuff, Ravenclaw, and Slytherin.