Gaming Mouse Under $20

Looking for a decent gaming mouse for my laptop.

I game a couple hours a day on my off days and need a better mouse that came with my old computer.

A standard left/right click and scroll wheel.

Need something wireless and under $20 as I don't wanna spend that much but want it to last.

Gaming Wise, you should really look into a wired mouse. Wireless mice have a lot of lag, but I'll give you a few options. 

Wired:

This i a bit YMMV, but Walmart has some Deathadders and Steel Series Mice on Sale

Wireless:

Logitech Wireless M510 is actually a very comfortable mouse and is ambidextrous if that matters. Plus it has 2 extra buttons.

(If you want a cheaper one minus the two buttons, I would go for the M325)

If you wanna really try for a non-name brand "Gaming" Mouse you could try this: 

HDE 2000 DPI Gaming Wireless Mouse

If you want a wireless gaming mouse then you would need to pay at least 3 times that amount. That is if you want something good. I actually would recommend something like this:

http://www.monoprice.com/products/product.asp?c_id=114&cp_id=11401&cs_id=1140101&p_id=9258&seq=1&format=2

I currently used a cheap wired.

Don't mind either just figured wireless would be easier for transport.

Thanks so far