Where to get Arizona Capacitor's Green Cactus Caps

I need a couple of 2.2uF caps for my preamp, and am curious about the sound of the Green Cactus caps, so I would like to try them. Anyone know where can I find these?
From the Positive Feedback Article:

Arizona Capacitors: There's not yet a North American vendor/distributor in place for Arizona Capacitors that can provide the smaller amounts that us audio hobbyists require, as Arizona Capacitors are used to dealing with large government/industrial orders rather audio hobbyists. In the meantime you can contact Daryl at Arizona Capacitors and he can help you out.