If you have a TFW account there are some Indian TF collectors here. If you have an account on any other international boards, maybe try starting a thread there and asking if there are any New Delhi based fans there. Maybe you can organise a fan meet?

Info about New Delhi toy stores in general (no idea if they stock TFs):
http://www.indiamike.com/india/delhi...-delhi-t61981/

This reminds me of when I went to China last year... I Googled and Googled for local toy stores and found sweet bugger all (other than LOTS of KOs - even in major dept stores!). When I was in Beijing I asked some local uni students, and one of them pointed me out to this one area that was known for collectible stuff, and lo and behold I found some cool stuff! I recommend hitting shopping centres and dept. stores, and if possible, ask locals. Maybe hotel staff?

As for Singapore, check out the Singapore Sightings thread here