Google Editions is close to being ready and should launch in the UK in the first quarter of next year, according to reports.
The delayed service has had to get through a number of legal issues and technical problems to get Google Editions out.
Initially, Google hoped to have the ebook store up and running in the summer.
Scott Dougall, a Google product management director, told the Wall Street Journal the company did not want to rush the product to market.
"Because of the complexity of this project, we didn't want to come out with something that wasn't thorough," Dougall said.
A number of publishers have reportedly signed up to have their books sold via Editions.
In Google Editions, users will be able to preview books before buying and will work much like the company's other cloud offerings, in that books will be accessible on devices with a web browser.
It remains unclear how much of a cut the search giant will take from each sale or whether Apple iPad and Amazon Kindle owners will be able to read books from Editions.
Google has had copyright issues with its Book Search in the past. In 2005, the firm was hit by two lawsuits over the service - the first a class action lawsuit from authors, the second a civil lawsuit from publishers.
