Input Nirvana has a pair. I was going to buy them, but be my guest, I can easily buy them from Kinesis directly at $90.
Just note there are 2 different versions of the red switch keywells, depending on the serial number of your keyboard.
BTW I saw on another thread you are interested in o-rings, WASDKeyboards.com only charges $2-$3 shipping small stuff to Europe, and he accepts paypal payments as well as credit card.