Have you abandoned the idea of buying as a group buy from the Chitaranjan park dealer?
With Vijay Sales selling it for 20,000 we can aim for that.
Mr. Jha (same guy in loads of earlier conversations) is based out of CR park (If i understand it correctly). So, you can't expect any good deal from him. May be 500/1000 Rs. discount or HDMI cable.
So, better option is to buy online from ebay when some offer like HDD is available. Better wait till diwali - few more days and I am sure you will get some deal soon.
Though ebay dealer also has reduced prices and also included free EMI option - which is icing on cake. Vijay sales doesn't sell Onkyos in Delhi neither some of big dealers like reliance, Croma (or they have old models). If you are highly optimistic, you can wait.