AbeBooks is an online book sales website founded in 1995, mainly selling popular books, second-hand books, and rare out of print books. In 2008, it was acquired by Amazon.com and became an independent subsidiary under Amazon.com. AbeBooks provides 24-hour service 365 days a year and provides consumers with real-time inventory information. If the book is mistakenly or missed by the merchant, AbeBooks promises a 30 day refund.