Yeah the clip part bugged me too actually. Don’t know what’s up with that?
I got mine from Goulet but another good place is: http://www.seitz-global.com/ You can get a clip and some cartridges as cheap as just the pen in the US on many of the models. They sell legit pens too and have great prices on the R&K line of inks. Free shipping and my stuff usually gets here in 8-10 days.