Any ideas? Want to buy trad. clothing for a cosplay/Gazette

[Ercharmion]

Well, I want to do a Gazette cosplay. The one where they wear tradtional clothing. Hakama, Haori, Mon,Obi, Gi, Hadagi...etc.

I wonder if anyone knows a good shop. Most shops only sell clothes in standard colours, not purple. I am not sure if I could dye it. No XP. I am willing to spend a lot of money, because I dont want to buy crap. Any ideas??