Uniform Sources

Iaido gi

I recommend the set sold at e-bogu.com

http://www.e-bogu.com/Iai_s/62.htm

or get the gi top and hakama separately.

Hakama here:

http://www.e-bogu.com/Top_Quality_Black_Tetron_Hakama_Size_All_p/tak-ken-hak-tqtet-black-all.htm

Sakura also sells the hakama

http://www.sakuramartialarts.com/Martial_Arts_Uniform_Hakama_Iaido_Aikido_Hakama_p/uni-2000-a1.htm

The web page also has a sizing chart, which can be used to find your size and then go to
All Martial Arts at

4025 West Charleston Boulevard
Las Vegas, NV 89102-1612
(702) 878-2883

Obi:

I have found a reasonable priced kaku obi at Sakura Martial Arts online. In choosing an Obi, make sure it's not a karate belt or, Sumo Wrestler's belt.

http://www.sakuramartialarts.com/Martial_Arts_Belt_Iaido_Obi_Sword_Weaponry_p/bel-0200-a1.htm

E-bogu also carries obis, but they are more expensive than the ones linked above at Sakura Martial Arts

Iaito:

E-bogu features the Tozando iaito

http://www.e-bogu.com/Top_quality_Japanese_Iaito_Swords_s/59.htm

Mantis swords features the Paul Chen iaito

http://www.mantisswords.com/iaito_katanas.htm

Musashi Swords

http://www.musashiswords.com/shop/home.php?cat=28

True Swords features the Musashi line of swords and iaito

http://www.trueswords.com/bushido-musashi-unsharpened-iaito-training-katana-sword-p-4991.html

There are other sources, but these are just a few.