I gave this 4 stars because it came with a curious little paddle attached to the inner container that I never understood. Also, there was a number wheel on the outer lid that I never quite understood either.I bought this retail for about $20 a number of years ago. I can't believe sellers are trying to get $150-500 for this! What's my incentive to buy when there are new, much fancier yogurt makers for $60 or less?That being said, I always had good yogurt from it, no problems. I had failures too, but it was due to my errors, not the machine. I like the simple easy-to-clean single container, rather than the 5 or more containers other models offer.I came to Amazon looking for a replacement because mine was lost in a move. Too bad its been discontinued. If Salton brings it back my suggestion would be to have a glass container rather than plastic, and a battery option along with the plug-in.