I just realized I missed one:
Meinl Percussion FX20 Effects PedalCost is $299.99 from Sweetwater. Foot Percussion Controller with 10 Preset Sounds and 10 User Sounds, Mono and Stereo 1/4" Outputs, and 1/8" Headphone Output. Looks as if you can import your own sample to it. That's kind cool.