Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: great buy

I've had this set for a year and a half now and I think they are great, especially for the price. (But I got them on sale for half off!) Absolutely nothing sticks to the nonstick interiors and the surface coating has been very durable, no scratches or chips. My only problem is that the color darkened on the the pieces I have tended to use more often. But this isn't really a big issue since otherwise they have far exceeded my expectations.