I would easily pay $15 for a cup of Esmerelda from the auction lot. That's a friggin' steal!
As Jay Caragay aka Onocoffee (Barista Guild board member, owner of 'Spro in Towson, Maryland) upon returning from the WBC in Japan mentioned in another forum: A very well known place in Tokyo, cafe de l'ambre, owned and run by a Japanese coffee master has single origin selected coffees, house roasted, hand drip (pourover) 50 ml cup for 700-1200 yen... that's about $48 for a regular size cup of coffee. It's not over priced, the fact is Esmerelda at $15 per cup is vastly underpriced.
BUT in order to get those prices your entire shop has to have a quiet air of perfection and excellence throughout. The coffee has to be roasted and prepared in such a way that the best of that coffee is brought out... just because you have Esmerelda doesn't mean you know how to make it shine. But in Artigiano's case, I'd pay the $15, and be thankful for the bargain.