Facebook has made the page boosting really simple as it is at your fingertips all you got to do is log in to your respective page and go through the option of page boosting. Once you tap over the boost page you will get to know so many options from which you can opt any of them.
There will be options for increasing page boost, post boosts and many more. Each and every boost are having a different perspective. Facebooks asks for a very decent amount in return for page boosting