After I have edited the Cajon with sandpaper and a borrowed router, really anyone who sees them and especially hear that I bought it thinking.
Conclusion: just buy it, the price difference for percussion kit was absolutely worth it! (Higher quality materials, clamping tool, glue and fine sanding block with this!
Summary:
+ Great value for money (especially compared with the percussion kit)
+ Very good sound quality
+ You can request at a lot of effort in optical tuning set (painting, router Rounding, pickling ...), then you can see no difference to a high kekauften Cajon more
+ One can vary the snare sound to the small enclosed foam cubes good
- Nothing ...