This is from their FAQ:
"What is the difference between verified and unverified books?
The "verified" column indicates that the person who posted the book has proofread it for errors, or has otherwise vouched for its quality. It's not a 100% guarantee, but its a good indicator nonetheless. If you see multiple instances of the same book title, your best bet is to download one with the "verified" checkmark."
I don't think there is any way that this is a legitimate enterprise. Just did some Googling, and there's plenty of evidence that they are removing DRM, which is illegal. Libraries pay A LOT of money to get the rights to loan these books. There's no way these guys have obtained the rights to give them away for free or for such a small fee, and in a way where you could share them endlessly with others.
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