They are perfectly legit. They do drive a hard bargain. No advances and no wiggle room in the contract. They pay 10% on gross. They give nice critiques on rejected manuscripts and often offer to re-consider a rewrite based on their suggestions. When they really like a manuscript, they jump on it without the usual waiting time.
The contract is a weak one, absolutely non-negotiable, with no spelling out as to what they are buying. They pay 10% royalty on everything, including e-books, with no sliding scale according to print numbers sold. They pay 50% to author on subsidiary rights (also not spelled out), and 50% on movie rights, instead of the standard 90%.
There is a clause in the contract asking for first refusal on the author's next book in that subject. If the author plans sequels, they are stuck with that contract unless the CFI turns them down.
Their acquirings keep strange hours and are often impossible to reach. One wonders how they get any work done. If you feel your book is worth better, pass on this publisher.
They do have good distribution and start publicity right away, long before publication date. The humor on their website does not translate to how they confer with agents.
PS. Their newer contracts don't require first refusal on the next book, no matter the subject, but they DO require the author to tell them about an outside offer,so that they can have the chance to make a counter-offer.