Usually, I get my weapons from Kiyota in Maryland, and have been for many years. He doesn't have a web site, but he has very good prices and lots of different types of wood weapons. One of my favorites is the Chiba-san bokken designed by Chiba Sensei. It has a great weight and balance. More like a sword balance than the typical bokken balance.
Mr. Kiyota is very worth investigating and getting his number; absolutely the best products and best prices including gi's hakama's, iaito's etc. And if you ask very politely he will even personally pick out a nice bokken for you. Very knowledgable gentleman.
Peace in your heart all.
