I want to know the answer to the following question:
When was the competetive pricing of MacBooks especially effective?
All the background I'm provided with is that "Through July 1, 2013, the MacBook Air took in 56 percent of all Ultrabook sales in the United States, although being one of the higher-priced competitors, though several Ultrabooks with better features were often more expensive than the MacBook Air.". Is that enough to answer the question?
Answer: no