Good price. Some qualms though, listed below. Will add more if more come up. Not a bad mouse. Fits in my hand a lot better than my Razer Deathadder Elite which I found was uncomfortably bulky in design. This mouse is very very very light weight, which I wanted. Will update if I have problems or additional qualms besides what I list below. Nothing serious, just minor stuff at present.
1.) The two pre-set built in DPI speeds are abhorrently slow, forcing you to install software to customize the mouse, which I don't like doing, as I always have problems with mouse software (see #2)
2.) The mouse has RGB lighting, which is so painfully bright as to glare out the corner of your eye. Annoying any time your hand isn't on the mouse. Even with software updated and mouse firmware updated, illumination settings do not seem to function. UPDATE: Simply disabling illumination does not disable it, you actually have to click on each of the 3 regions of the mouse and individually disable the lighting on each, because the universal illumination disabling doesn't work. That wasted an annoying amount of time trying to troubleshoot. Wouldn't mind the illumination if you could actually dim it a lot. Boy is it brilliant....
3.) There is only one DPI button. This is clearly stated, though I never realized how inconvenient this is when you have more than 2 DPI settings setup in a mouse profile. This makes this not an ideal mouse for gaming where you need to switch DPI and have more than 2 DPI settings, which I have.