You will need to code it into the theme, but there are many tutorials online such as this one: http://justcreative.com/2013/01/22/how-to-use-custom-fonts-with-font-face-on-wordpress/ but it will depend on how your paid fonts are delivered and used. Is there no tutorial that came with your fonts? As I mentioned, there are several methods, the link I posted above is one but to do it that way means you will have to use the child theme because it requires you to edit the theme files. Might want to do a Google search on adding custom font to your website.
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