reviving this one with a bit of user input.
The CS katana is a heavy and unbalanced sword (forward heavy) which gives a impactful downswing but makes it hard to stop the blade. You'll need some muscles for that.
It sharpens easily and sharp (did so on DMT diamond stones) but I've left it at the pretty large angle (obtuse). mine did not come sharpened in any useful way when I received it around 2012 but after sharpending inspires respect (as most edged weapons will) and will cut pretty good.
It will sing nicely (swish) when using correct angles and technique.
Build quality is what you can expect. A big hunk of steel and a finish on both sword and handle that is nice on superficial inspection, but very basic. The tsuka is not tightly wrapped and not that comfortable. Is it too expensive? Not for me at that time, I wouldn't really know what to expect of a $100 other sword, but can you really get anything for that?
the CS katana video is laughable/awesome/cringeworthy/amazing/stupid (pick one), but also gives a lot of insight in what it is good for and where it would serve a purpose:
That it is not what a katana historically was, is not really a valid point _for me_. We are also not walking around in protective leather anymore (uhmm.. I hope). That it has some considerable weight and that it would serve as an impact weapon is just a different use case (as evidence has it from the duel between sasaki kojiro and miyamoto musashi). If put to use, besides that the whole world then would have gone crazy, it would serve fine I guess, and since sharpening services would not be so easily available then probably, such a sturdy katana would then be a good thing to have. So, it is a sword, denying that is just sword snobism. I understand that a real historical katana could be a work of art and will have superior weight, finish, handling, quallity etc, but that's the whole point, they were specialized for _their_ specific use case and historical period. And I don't believe that everyone in that era would walk around with a legendary sword either. A CS might have served them fine too.
I'm not a swordsmith, sword expert, historian, nor trained sword fighter, so take it for what is its but have trained with weapons quite often in the past.
I use their bokken katana and wakazashi trainers to train/play with the kids and find their training weapons very nice and much superior to other trainers (they are heavy and are pretty indestructible)
All in all, I'm happy with my CS katana