The squabble is affecting writers like Stephen King, Lee Child and James Patterson. They claim Amazon is sanctioning books - I'm not sure what they mean by that, but I think it means they don't supply them in the usual way when asked - but it affects 2,500 Hachette authors and over 7,000 titles.
Sales for these books have declined by between 50% to 90%. The struggle has been going on for six months and really hurts debut and midlist authors.
In a nutshell, Amazon says it is fighting for lower prices which benefit the consumer. Yay! Authors United, who oppose what Amazon is doing, are seen as a group of "rich authors who are seeking higher e-book prices."
I don't know the rights and wrongs of this squabble, but I do know I won't pay £10 for a Kindle copy of any book. I'll wait. Eventually the price comes down. I'd hesitate to pay £5, but then maybe I'm mean. I'd pay £6, £7, even £8 for a paperback copy - but not a Kindle copy. I think I'm siding with Amazon.