You can consider the following. Mumbai Prices.
All routers support Wi-Fi Protected Access (WPA and WPA2) for security.
Netgear KWGR614 - Rs.1675
Linksys WRH54G - Rs. 2000
Linksys WRT54G2 - Rs 2700 (better range) . Bought it on saturday for a friend. Working fine in his 1200sq feet home.
^WRT54G is a discontinued model. It has been replaced by WRT54G2.