Kopi Luwak is the most expensive coffee in the world. At my local specialty coffee bean store, it sells for $420 per pound—or $10 for a 10 oz. brewed cup.
Kopi Luwak is very different from that cheap, gauche coffee you and I drink every day. This is because each hand-harvested bean of Kopi Luwak has been artisanally shat out of the digestive system of a small Indonesian pseudo-cat.
Yesterday, my husband and I split a cup of Kopi Luwak in an attempt to figure out whether having cat butt all over your coffee beans really did noticeably improve the flavor, or whether this was all just an elaborate practical joke on the part of Indonesian farmers.