Not too rough, if you don't mind ordering from China.  Check out [this camera](http://www.ebay.com/itm/1080P-Full-HD-MJPEG-30fps-60fps-120fps-OV2710-CMOS-USB-Camera-Module-Android-/222119769081) on ebay.

It actually sports a Full HD CMOS USB Camera, which shoots at 30 / 60 / 120 FPS.  It's going for $45.26 US, plus 99 cents shipping, but it looks like it meets your specifications.

There's also [this one](http://www.ebay.com/itm/2MP-High-Speed-120fps-USB-Camera-Module-3-6mm-OV2710-Color-Sensor-MJPEG-Format-/182222222239) for $49.62, which also appears to meet the speficications.

Note that both of these have limited supply, so you may or may not be able to get hold on enough for your project.