Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Just get one.

Bought it to check a code and it gave an accurate reading. I was able to narrow it down to a couple of things from the reading. Now, as I shop for service, I'm armed with this knowledge. It's an excellent protection mechanism and if you use it once, it'll likely pay itself off, especially if it's a minor fix you may even be able to do yourself.