What is an alternative reading website to Playster.com?

Hi.

For those who don't know, Playster is a website with books, movies and music on it. For one payment option a month, you have unlimited access to either all the books, all the books and music, or all three for no further payment. I'm on it purely for the books, but it's a relatively new website with a horrible search engine and does not contain a lot of the books I am after. Is there another website like this? I can only find websites that have E-books available for individual purchase instead.

Thanks.
Added (1). I am located in New Zealand so Kindle Unlimited is not an option.

Read more: What is an alternative reading website to Playster.com?