If you're looking for a polyphonic octave genarator, then you'll be paying for it. thats just the way life works, this little guy cost me 15$ and if you're looking to just play around with a octave then you can't go wrong really. i actually use this live and have recorded with it. i use a digitech whammy V5 on the octave up plus dry tone and use this on all the knobs up and you can get a Dead Weather esc tone. and because it bounces with the low octaves it has a ring modulator kinda vibe. just remember if you can get the tone you want with a ss 15 watt amp and boss metal zone then who cares what people think.
I really bought this one because of the price and it has only -1 octave, -2 octaves and clean signal. It's not polyphonic, and it's hard to manipulate the knobs. I see it more like a toy and not like a musician's tool.