Instruct: Classify the given review as either positive or negative.
Query: Do the math.

This filter replaces one that is more than 22 years old. That one was sold by Braun, but made by SwissGold. It has always worked beautifully, but after 7000+ uses and trips through the dishwasher it is showing its age. I figure I spent probably $20 for it back in the 80s. I could have purchased Melitta filters in bulk over the years, and spent a minimum of $325. Yes, you can buy a "gold tone" metal filter that is cheaper.