First of all. i SWEAR they ARE overpriced. The guy who sold adai, said first the price was VERY MUCH LOWER. You have to understand it. Also, Mikhail, too makes me know that, because he sells VERY high prices, i mean VERY large margin he makes, and still his price is lower than that of ali. so from factory he gets MUCH cheaper than you thought.
Now you all guys just rising the price of knife which you could buy much cheaper. with your words it rises very high, because of the demand. No one buy - he would understand, he should set the initial price.
The second, there really is something to do with kevin bearings. You should look at this
http://youtu.be/sobsx3ZYpbY?t=14m9s and also from 16m 56s you can hear what a crap a-dai bearings are. also i had replica of zt 0888 and the bearings are AWFUL, every bearing not the same size, not round, like ellypse, that's why that bad kind of movement and sound. even kevin's ones are better.