I've tried the demo for a bit now and just checked they have a special discount going on, selling it for $66 which is roughly 49€ which is just ridiculously cheap. I'm really really tempted to buy it as I love it's analog modular sound, but only tried it for a few minutes as I don't have much free time at the moment.
Tbh you really have to sit down with the demo and experiment. Plug modules into others, turn knobs, etc.
I thought it was weird at first, but it slowly won me over as I grew accustomed to it's way of doing things, and I parted with my money. It can do subtle, and then it can go wild, and all sorts of things in between.
I really like it soundwise and the interface is a fresh approach. One of the better softsynths around. As with every real instrument, it needs some practice. But this thing is worth the time. To be honest, I don't use it that often, because I have a modular with more or less the same capabilities..
Short answer is yes, long answer is yes it is. But you have to click with it, it's ITB child of Buchla after all. OTOH, I think it's worth 49€ even if you use it just as plain simple single VCO -> VCF synth, very good sound. Hell, it's worth it just for a decent LPG emulation.
The built in reverb sounds really good too (not that it's a selling point).
Awww I'd pay €49 just for a VST of the reverb!
Is the synth worth €49? Undoubtedly. In fact I'd say it was worth €149, but it is very different to your regular VST synth so you'd be investing quite a bit of time on top of the money. But even if you couldn't give the time you'd still get enough serendipitous sounds out of it to warrant the dollar.