The deko thing was crazy. I bought, and still own, four acoustics for £120, and none of them needed anything drastic doing.
I think a lot of the problems with their acoustics was uneven output from the piezo elements. A little fine tuning with some slips of paper/card and all mine are fine. The fretted acoustic had a high 17th fret but I just tapped it down and gave it little filing to level.
I nabbed a fretted and fretless uke bass, and 34" fretless and a 32" fretted bass. The 32" is particularly nice and a jump up from the basic acoustic that most of the dekos were.