You do not need to purchase anything to use bullet and number lists in TinyMCE.  TinyMCE itself includes many plugins as a part of the open source package so you just need to make sure you load the correct ones to support the functionality you need.

In order to use the list toolbar options you need to load the lists plugin in your TinyMCE init. You can also optionally add the advlist plugin for additional functionality.

https://www.tinymce.com/docs/plugins/lists/ https://www.tinymce.com/docs/plugins/advlist/

tinymce.init({
  selector: "textarea",
  plugins: "lists, advlist"
});