I don't want to start a pro/anti sheepskin thread but I found cheap sheepskin (cheapskin?) wash mits at BJ's today. Two for $8.00 with a 2'x2' synthetic chamois thrown in. They seem to be of good quality and are very soft. For what it's worth...
http://autopia.ws/photopost/showphoto.php?photo=147
http://autopia.ws/photopost/showphoto.php?photo=147