[tdq]

It did sound pretty good...I did a similar experiment with a $10, 3 piezo disc pickup I bought from eBay. I thought it was ok through my amp but when I went direct into my DAW it was awful, and it was difficult getting a decent eq on it (although I'm not an expert on this by a long shot). The discs were mounted inside a plastic unit and since installing them one has come loose inside the mounts and is buzzing so much as to be unusable.

I don't play amplified much so it was a worthwhile experiment. As others have said, my feeling is that the extra money you can pay is for QA and quality assembly, rather the the actual piezo discs themselves. I suspect when I'm serious I'll get something higher end, although I don't think it needs to be top end.