At least for Greece, it is one of the best mice at this price.
If the G402 doesn't fit your hand or grip (or you simply don't like it aesthetically - cough cough), this is a very decent alternative to more expensive mice like the Deathadder.
It has the top-notch PMW 3389 sensor, mechanical Omron switches on the buttons, sturdy construction, convenient shape/size for a normal-sized male hand (18-19 cm), two large mouse feet underneath that glide without any issues, and the RGB LEDs and matte "metallic" finish are aesthetically pleasing.
There are mixed opinions regarding the plastic side grips with the "metal platform" rough surface. Some find them hard and annoying, while others are not bothered by them. Personally, I didn't find them hard at all. Some also say that they slide too much with sweaty hands. My hands don't sweat easily, so I don't have an opinion on that.
Another complaint that is heard is that the shape on the sides is convex instead of concave. As a result, it slips from the hand more easily. It is true to some extent, I noticed it; however, I don't consider it a decisive factor or something particularly important since the grips do their job well.
In conclusion, it is a very good mouse for its price, and I believe that the positives outweigh the negatives that may exist for some.
EDIT:
Lately, I have significantly lowered my DPI, and I play more demanding FPS games, and due to the summer, my hands end up sweating. Consequently, I came to the conclusion that it doesn't suit me as much as it did without these factors.
I often struggle to lift the mouse, not because the grips are slippery, but because the shape of the mouse itself on the side, combined with its weight, causes it to slip from my hand.
For palm grip and high DPI, I imagine it is perfect, but for me now (claw grip/low DPI), it doesn't do the job as I would like.