Because it cost more money. To be on a top they must to have a platinum plan , which is cost $280.
Also, it's not guaranteed that you'll be on a top of a listing of a specific city. There are many different factors,for example, pictures must be updated is often as masseur can , description must be uploaded at least once a month, using always different features of masseursfinder , like discounts and more...
Masseurfinder.com has a good SEO, and they are first on google search. It means that almost every each masseur put his effort to make SEO of masseurfinder.com better. If you don't trust me, register on masseurfinder.com as a masseur, and you will see that your listing will be graded"A,B,C,D,E,F". If it's an "A" grade listing you are on a top, otherwise you are at the bottom. Also, they will give you different salutations how to make you listing better.