I agree with Kent, E-bogu and Bogubag have good prices. I have THIS HAKAMA
from E-bogu and quite like it. It's $60 US but has a couple features that make the extra $10 worth it IMO. I also have two from Bujin, one with the traditional koshiita and one with the aikido koshiita, and I much prefer the $60 Tetron one mentioned above from E-bogu.