Is best to buy at Mercedes-Benz glk350 that has 100,000 miles on it

Hello, There is an old saying: "There is nothing more expensive than a cheap Mercedes Benz". People get rid of Mercedes at 100k miles because there is no chance of CPO coverage afterwards, and that is typically when they will start showing their issues. My wife has an ML, and it is just fine, however, when there is something to fix, I automatically assume the minimum is about $500 in parts. They really are expensive to maintain. Keep in mind the service records, as they can indicate future failure. Also, there are many comparable SUV's to the GLK that do not come with the maintenance and repair headaches. The Toyota highlander will be less expensive, and twice as nice inside.