($19.99 shipping though)
I just got one of these recently and am building an emulator cabinet with it. It is built VERY WELL. Great quality.
Also find the non trackball version here for $99 +$9 shipping:
INDESTRUCTIBLE HOME ARCADE JOYSTICK
Get your nostaligia fix with this authentic arcade panel and trackball designed to inject the arcade experience into any home computer or video game console. , Play side by side your closest friends and family, no quarters needed!
X-Arcade Tankstick™ Features
The Industrial-Grade 3™ Trackball located in the center of your Tankstick™ separates this controller from the Dual Joystick and allows you to control thousands of classic arcade games. Since it's recognized as a standard mouse--you can also enhance any of your favorite games that support a mouse, with no drivers or software required.
This is $50 off original price.
SALE ENDS SUNDAY AT MIDNIGHT