I ordered one a few days ago and its a pretty high quality mouse and it looks like Amazon seems to be trying to get rid of them and the price keeps dropping everyday. Ive used it for a few hours and it compares pretty well against more expensive mice Ive bought from Razer and Logitech. 4000 dpi and adjustable polling rate and customizable buttons and led color.
The reason why the price is low (im guessing) is there is some surface rust on the weights that come with the mouse. Its easy enough to polish them up and spray paint them, but either way it doesnt affect the mouse since its not visible. You should also be able to get a replacement set from the manufacturer. Retail price is $34.99 roughly