You may purchase the gyros directly from Analog Devices,
www.analog.com or digi-key,
www.digikey.com. Analog Devices provides evaluation boards, for their gyro product line, which will let you wire it fairly easily.
The parts of interest are the ADXRS300EB, the ADXRS150EB, and the ADXRS401EB. These are the evaluation boards and have the following sensitivity: 300°/sec, 150°/sec, and 75°/sec, respectively.
I just checked digi-key's site and the 150EB is in stock.
I would recommend going to Radio Shack and buying a soldereable breadboard. Actually buy a 20-pin IC socket (also at R Shack) and solder it to the board. In this way, you can easily remove the sensor. Solder a PWM cable to the breadboard, as described by Kevin Watson,
http://kevin.org/frc/. You should be good to go.