There is no one-size-fits-all answer to this question, as the amount you pay for publishing will vary depending on a number of factors, including the type of publication you are interested in (e.g. a book, a journal article, etc.), the publisher you choose, and the individual agreement you reach with them. That said, there are some general guidelines you can follow when budgeting for publishing costs.
For example, many publishing companies will charge a fee per page, which can range from $50 to $100 or more. In addition, you may be responsible for providing your own manuscript and paying for any additional services, such as editing or proofreading. Once your publication is complete, you will also likely be responsible for paying a printing fee. These costs can add up quickly, so it is important to be aware of them in advance.
There are a few ways to offset some of these costs. Many publishers offer discounts for authors who are able to provide their own manuscript, and some will even waive the printing fee altogether. In addition, some publishers offer discounts for bulk orders, so if you are planning to publish multiple copies of your work, be sure to ask about this possibility.
Finally, keep in mind that the price you pay for publishing should not be your only consideration. It is also important to choose a reputable publisher who will provide you with the support and resources you need to ensure a successful publication.