Testing, testing...
Testing the software with the trial version was interesting. You have to follow the instructions carefully - they're not complicated, but you might see the occasional stall or freeze during the process. My test DRM (ACSM) removals looked perfect, but they were missing a TOC and chapter links. It could be that the full functionality of the ebook only presents itself when the entire book is converted. A little more transparency on this within the instructions would have been helpful. Another tool which I couldn't try out with the trial copy is the ability to change out the covers for your own. Particularly useful when your ebook supplier arbitrarily changes the covers of books you already own. There's nothing that says "you don't really own any of the ebooks you buy, you're just paying stupid amounts to rent them" than have someone come into your home, rip all the covers off your books and stick on replacements. This tool makes every penny of the price of the software worth it. Bear in mind that I couldn't see a way of batch processing the books to download, you can only do that one at a time, but the DRM removal can be batch run.