Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Manufacturer Rip-Off

The test solution is only good for 3 months after opening. This fairly means thata new bottle needs to be purchased every 3 months. We pay a significant amount of money to Lifescan for test strips that are useless unless tested using their solution that expires 3 months after opening. If Lifescan's policy is to not rip-off its customers, then they need to include the test solution with the test strips.