well its not going to be cheap though.
I think there were some kimono shop around Omotesando area.
I found this store also by google
:
http://kimonomap.com/
着物のことなら着物専門店「丸や呉服店」kimono-maruya
if you really want those really nice kimono , start your budget at $1000
are you going to be wearing it or just for collection?