I recently read a post that said whenever you post something to your Facebook business page, all of your followers will see the post.
It would be great if this were the case, but alas, Facebook has to eat, too.
Remember that your Facebook business page updates will never be organically seen by all of your followers. Only a small percentage of followers will actually see the updates.
For one thing, not all of your followers will be online to see the posts. For another, Facebook isn't going to serve your posts to all of your followers out of the goodness of their hearts. To remedy this, you must pay to "boost" posts to get them in front of more followers.

Take a look at the screen grab above, which is an example of a post after it was boosted for a day. That particular Facebook page had around 4000 followers at the time. At a low cost of $6, that specific post reached over 25% of the page's followers, two thirds of those through boosting.
How Much Does Boosting Cost?
Boosting a post isn't necessarily expensive. You can do it for as low as a few dollars, all the way up to several thousand. For small businesses, it is a very cheap and effective way to raise brand awareness.
You can also specify whether you want the post boosted to your followers, your followers and their friends, or to the Facebook community at large with some demographic parameters set like gender, age, and location. Personally, I find it more effective to boost the post to the people that are already following your page. They will be more receptive to engaging with the post because they're already interested in what you have to say. Save the "at large" dollars for advertisements that will generate more Facebook followers in general.
Don't Go Crazy
Don't boost a post every day. Save boosting for posts that you think will generate a lot of interest and activity, whether that be a comment on the post itself, or a phone call to purchase something you're offering.
Whatever the case, pick your shots so you're not spamming people's timelines with sponsored posts. They may drop your page altogether.