Is the publishers Information Bureau Prize Report a Scam?

They are not a scam, per se. They do provide actual products. BUT they have terrible customer support and are incredibly rude and unprofessional towards ex-customers. As well, in my dealings with them, they misrepresented themselves. Can't say whether that is a common occurrence or not though. Only that the numbers they provide to customers/ex-customers are often out of service or never answered. And that they made a single unauthorized charge to my credit card for a large amount.

In short, I wouldn't trust them, even if they are not actually a scam.