Need a touch screen but can't afford the $600+ entry fee?
For about $150 you can get a 14" USB driven touch screen overlay or up it to 15" for $165 or $190 for 17"
Do they work? Yup. We have two 14" units we use with our food pantry laptops. Just install the software, plug in the screen to the USB port, and follow the simple calibration screen...then you're rockin'.
If you need to setup a kiosk system w/ touch screen on the cheap this is certainly worth checking out. The only drawback I can find is the screens are not totally transparent ... the micro-dots on the screen make the screen a little cloudy looking. You can still easily see through the screen, but it's certainly not transparant. Otherwise it's the perfect touch screen solution on the cheap.
PS ... make sure you order the screen with the long velcro straps or you'll have to adhere velcro patches to the monitor/laptop.