Amazon launched Kindle Unlimited in the United States on July 18th. Then, they extended the service to the United Kingdom (September) and Germany (October). I do not know if they plan to make it available in Spain. The membership fee is considerably cheaper in the US ($9.99 per month) than it is in Europe: 7.99£ in the UK and 9.99€ in Germany (in both cases, almost $13).
I was staying in the US on July, so I signed up for a 30-day free trial and I tested the service. I read two books and I used the service in four different devices: a Kindle, a Kindle Fire, an iPad and a Nexus 5.
First of all, I have to say that I am a frequent customer of Amazon. I buy to them almost all the books I read, among other products, and I am very satisfied with their service. The physical goods shipping is always on time and I find very convenient reading digital books on Kindle.
However, I discontinued my membership to Kindle Unlimited after my free trial expired and I kept buying books to Amazon as I was doing before July. Why is that?
The main reason in my case is that not every title is available in Kindle Unlimited. I do not want to pay a monthly fee and having to buy anyway some books I need to read. If they included every single book they have in the catalog, I would sign up again. Actually, I would be willing to pay a bit more for the monthly fee if that means everything is included.
But there are another two possible reasons why other people might not be interested in becoming a Kindle Unlimited subscriber:
Some people refers to Kindle Unlimited as the Netflix for books. I understand the parallelism, but I do not agree with this statement. The principle is the same, and it is the monthly fee, but we are not speaking about the same kind of content: reading is entirely different from watching TV, so it does not have to work the same way. In fact, I am a Netflix customer and at the end of the month my family and I have watched a good number of films, chapters of our best-loved series, TV shows and documentaries. If we had to buy them individually, that would be simply unaffordable.
So, in summary, I would like to be a Kindle Unlimited member but I do not see it as a good deal for me right now.
These are my thoughts about this topic. Any comments? 
