The only issue would be with regards to marketing the older models following the launch of subsequent models. "The new iPhone 2014 revision" will not sound good come 2015 when the New iPhone comes out. Macbooks don't really have this issue as Apple discontinues the old line as soon as the new one comes out.
I suppose each to their own with regards to the design of the Beats headphones, personally they are not to my taste. Tacky plastic is not really my thing, that's why I like my Apple products. I wish Apple had bought Bowers & Wilkins, now there is a company that offers quality along with taste and design in spades!
The iPhone 5C was over priced at first and did not sell as well as Apple expected. The price, at least with carriers in the UK, is now far more palatable and the sales have increased accordingly.
The 5C is a lovely device, long may it's sales increase.
So, if the publishers are all poor & the authors complain that they get pittance for each book sold who makes the money out of a £10 book? Someone had to.The print and shipping alone wouldn't make up much of the cost, so someone is making a truckload somewhere on printed books.