Kamla Nagar and Sarojini nagar both has so much variety of kurtas and they have reasonable prices also.
Just checkout different market streets. Kurtas are available almost everywhere. Pallika, karol bagh and lajpat can be given preference
You can have a look at Westside stores!
Saroji nagar market
Karol Bagh or Lajpat Nagar
Super 30 fab , teck fab, rajhans all are there in Kamla nagar market