Mikhailtech take a look at Mitsumi's $15 ECM-S6102 black optical mouse. It's completely stripped down (i.e. totally hollow) but pretty good except for one major annoyance.
The first thing that jumped out at me was that sorry excuse for a wheel. Turns out this is one of those three-button mice, where the "wheel" is a button you hold up to scroll up, down to scroll down, and depress to activate/deactivate the Windows scroll feature. To me, this is the worst "feature" of the mouse. While it isn't widely used in games (although sniper zooming, inventory scrolling and up/down looking come to mind), it is a valuable thing to have. And of course it really got to me where I spend most of my computer time: Mikhailtech. I for one like to have the ability to scroll fast or scroll slow, without having to press any buttons or hold down that dinky stub and wait for it to accelerate to a slightly faster than crawling pace.More information at Mikhailtech