This Skewb Modification is worth it.This is also very interesting to solve.In terms of difficulty,it won't be the hardest or the easiest but is somewhat in the middle.The puzzle is smooth and the turning is a bit stiff but you can't expect a lot from shape shifting puzzles as they aren't for speedsolving.The corner twisting mechanism is crazy and can be done lightly otherwise it mag break the pieces as they are small.
Buy the Polaris Cube as well if you are fan of Skewb mods like me.
Both are different but yet are Skewb Modification.
Worth every penny.
Moyu making these shape mods available at such cheap prices is a pure blessing.