This is a friendly reminder to never, ever publish your book with a publishing company that charges you to publish with them. That is a vanity press, which makes money by preying on authors. They charge you for editing, formatting, cover art, and more. With most of these companies, you will never seen a cent of any royalties made from sale of your book. A legitimate publishing company only makes money when you make money, they will never charge you to publish with them. If a company approaches you and says "Hey, we'll publish your book, just pay us X amount of money," tell them to go fuck themself and block them.
Remember, kids: money should only ever flow FROM your publisher TO you.
Here's a very well-maintained resource by the SFWA (Science-Fiction & Fantasy Writers Association) that lists contests/editors/small presses/etc. with predatory behaviours:
Go forth and publish safely!
@selenite0 has a full presentation about shady publishing contracts, this might be something to add to that