I've seen Cocucho pottery in the past in Patzcuaro and heard that they are very cheap if you visit the town - but I was unsure where it was or how hard to get to.  The road is between the Paricutin turnoff and Paracho and paved all the way.  Very pretty country.  There are a few stores on the plaza that sell the pottery but more interesting are the little factories that make them - and sell as well.  The place we found was on one corner of the plaza and the family showed us the whole process more or less.