http://www.musicalandroid.com/1/post/2013/06/caustic-warrior-jblann-talks-about-caustic-and-builderz-packs.html
The ones he did before was based on samples for the PCM sample player. In these packs Caustic 3 essentials there is also a lot of presets for the other sound engines and then you have a drum focused pack.
They are less than a coffee but not skimping on quality!
There is a demo to download if you feel unsure with workable presets and here is some videos for you to get a taste and get a feel for what it is all about.