No, you don't have to buy anything. All this does is to use Bridge to set your Adobe apps to the same Color Settings, for example "North American General 2".
Since you do not have the Suite and cannot use the Suite Management command in Bridge, just set "North American General 2" in the Edit > Color Settings of each of your apps (photoshop, illustrator and indesign) if you want them to have the same Color Settings.
But you may not actually want things synchronized across Suite applications if you don't always use them on projects in an integrated fashion. For example, as a photographer who strives to maximize image quality I use ProPhoto RGB as my Photoshop working space. But for those occasions when I do use InDesign I use Adobe RGB since this matches better with what most service providers are expecting. So keep in mind that the "unsynchronized" warning is just a warning, and one you don't always need to heed. Don't get confused if you don't need things synchronized.