They have a warehouse somewhere in the eastbay, so if you're in the Bay Area, shipping is outrageously fast.
Also, back when I decided to go deep on writing with pencils, I asked for suggestions on Twitter and the JetPens corporate account gave me a crap-ton of great suggestions (and I bought all of them, since most pencils are pretty cheap)
(tongue firmly in cheek :), though I did just finish the order.)