Oyster is one of the most popular subscription services for books, and the company announced today that it is introducing an ebook store on its platform. Joining Ouster on the launch of the new platform are many of today’s largest book publishers in the US including: Hachette, HarperCollins, Macmillan, Penguin Random House, and Simon & Schuster, and many more.

The new store allows readers, including non-subscribers, to purchase and read virtually any book from these publishers on Oyster, including all new releases and pre-orders.

“The growth of Oyster to date demonstrates the huge demand in the market for a product with design and user experience at its core, offering a totally new way to discover and read books,” said Oyster CEO Eric Stromberg. “We know that readers want to see all of their options and access every book—subscription and retail—in one place. With this launch, we’re pairing the best in subscription with the best in ebook retail to deliver a comprehensive offering for readers.”

Oyster launched its ebook subscription service in September 2013, and since then Oyster has built a large and growing user base reading over 100 million pages each month, up from 8 million in December 2013. The company has also developed collaborative relationships with publishers and engaged with authors to shape a strong future for books together.

“Since the launch of its subscription service in September 2013, Oyster has shown itself to be an innovative player in the ebook market,” said HarperCollins Chief Digital Officer Chantal Restivo-Alessi. “HarperCollins looks forward to growing its relationship with Oyster as it expands the choices it offers consumers.”

In addition to purchasing ebooks from Oyster’s new store, readers can also subscribe to Oyster’s subscription service to access over 1 million titles for just $9.95 a month. Recent additions to the service include titles from Macmillan and the full Harry Potter series. Oyster will continue to expand the selection of books available in subscription as the company grows.