It's a major scam. What they do is they wait for you to email them with your poem, then they send an email saying you're a finalist. They will publish your poem in a book with all the other "finalists" poems and then they ask for you to buy it which is around $50 to $65. They do compile a book with poems but they want you to buy it with outrages prices. And that's why they are such a big scam because people end up paying for so much for the book that contains their peom.
An legit publishing company wouldn't insist you buying your own book. If a real publisher picked up your poem and put it in their compilation, they would pay you and send you some copies of the book.