So, how much can you expect to earn if a publishing house does express interest in your book? That depends. If your book generates a bidding war between houses, then you could look at thousands, even hundreds of thousands of dollars in advances. Most publishers pay small advances to first time authors of $10,000 or even less, and that is why many authors choose self publishing a book over trying to find someone who will pay them to publish it.
* Going with a publishing house can really help you get your name out there so think hard before passing up an offer from a house.