If inspiration lacks these tools will help. And if you know what you want to do it will at least accelerate your workflow.
Captain Chords is the heart of it, it must be set to use Captain Deep and Captain Melody. The amount of available chord progressions is huge and the possibilities to edit them too. Just choose your favorites and drag them into your DAW.
Captain Melody will generate a melody along these chord progression. If you change the chords, the melody will follow. It makes sense to break deep into Captain Melody if you want really satisfying results for your melody.
Captain Deep is a simple tool, delivering basic bass lines for electronic music production, not more. If you want to create a jazzy bassline for example, Captain Deep will not make you happy. In my opinion it is the boring relative of the other plugins. Therefore I will not invite him very often to jam with the other family members.
In this family Captain Beat ist the party animal. It offers a lot of kits and pattern presets but what I like best is to assemble my own. For example: You can click through the available samples and patterns for the kickdrum, you can change velocity, add filter, delay or reverb or even load your own sample. Great! Captain Beat works without Captain Chords so you can use it whenever you want to.
My conclusion: The price for the bundle is appropriate even if you should use only Captain Chords and Captain Beat.