I POD Mini problems please help

I have owned an IPOD mini for 2 years and 2 months. I month short of 2 years the battery needed to be replaced, which I thought was odd considering I was only listening to it for approx 3 hours week. I paid the $89.00 in June of 06 and they sent me a new IPOD. Last week the click wheel started to stick and would not allow me to shut down the IPOD. I worked with the Apple store in person and on-line to trouble shoot and was told I would have to pay $150.00 to repair it. Needless to say, I am really upset and believe the IPOD mini to be an inferior product. Has anyone else had problems, because I will file a complaint with Apple Corporate and might even sue them if I knew that there others encountering problems with their minis.