Purchased the 600 series KP26M1XBS mixer in December 2006. I paid $340.00 at the time. Frankly, it doesn't get a lot of use. The planetary and its associated circular gear fell out. KitchenAid says that for $35.00 they'll send me a kit so I can send it in for assessment. Then for another $25.00 they will diagnose the problem. From reading other postings I find this is a common issue, due to a design flaw. Similar postings talk about $100.00+ repair bills but not a correction of the flaw so, it will happen again. Very dissapointed in the product. KitchenAid knows what the problem is. They should rectify it and correct design flaws on their own nickle. Instead, they want you to pay them to temporarily "fix" their design flaw. Makes it hard to consider buying another KitchenAid product.