Tate Publishing is NOT a traditional publishing company. They try to present themselves as a more traditional publisher by saying they only accept a small percentage of the manuscripts submitted to them, but they aren't real clear as to what the basis is for accepting or rejecting a manuscript. They are very vague on the website about their program in general. You must request info from them before they will give you a proposal.
What we do know is that the quality of the books produced by Tate is no better and in some cases worse than those produced by other self-publishing services companies. They make you think they are publishing your book for free, but you are required to purchase a large quantity of books at inflated prices. This type of hidden pricing is very disturbing to us.