@Williamlk: Sorry, if I wasn't clear. I was not asking if they are free. I was asking if they have DRM (Digital Rights Management), i. e. if they are "DRM-free". I was wondering basically if they are in a restrictive format that requires special software and work on specific devices. Like if I buy an ebook from your site can the same ebook be read on the sony reader, the ipad and the nook? Please let me know. Thanks.
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