Instruct: Classify the given review into positive or negative sentiment.
Query: Great when it works!

Pros:1. The components are super easy to set up. They actually work on the first try.2. The product concept is fantastic. Use the electrical wires inside the walls to extend a wireless connection anywhere in the house.3. The signal was excellent.Cons:1. The price is outrageous. The retail price is $150+.2. The two wall units get very hot. Netgear can solve this problem by putting in electrical fans, but it does not want to spend the extra $10.3. Because of the heat, the life expectancy is very short. According to reviews by consumers, the range is between a year to 14 months - just after the warranty ends. On this matter, I was lucky. Mine died after 1.5 hours, and I received a refund.