Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: $500 Paper Weight

A month ago I would have told you this is a great product. But Now.... Not so. Don't buy. The unit locks up regularly and when the trial subscription runs out for TMC alerts there is no link on MIO's website to renew. My unit is now a paper weight because I cannot get past the TMC expired warning page. I have a week old inquiry into MIO to try to get assistance and have heard nothing from them.