Thanks for the nice comments everyone.
I actually don't sell my pens, but I do give a lot of them away! I'm kind of a serial-entrpeneur type and anything I've enjoyed in the past I'd try to turn into into a business and it went from being an enjoyable hobby to... WORK! :-)
peaceteach - Hmmm, I haven't seen calligraphy pen kits for me to be able to make, I'll have to check into that...