I do believe €99 is a good sale price for this kind of creative software, as I deem stuff like this (and Zynaptiq Adaptiverb or SoundTheory Gullfoss) quite magical.
Heck, I love Tracktion. Came in through the bathroom windows for their constantly updated free DAW versions. Then got hooked on Waveform, those Retromods and, yes, Biotek2. It’s a pretty, pretty, pretty good creativity booster. Me likey.