Nice to see another Mumbaikar here. DVD-RAM is going to be difficult to find around here, try at Lamington Road. Imation 4X DVD-R discs are 95 rupees/piece or so, and they are very good. You could also try Mitsubishi/Verbatim DataLife Plus discs.
Call ComputerMedia Products : phone - 23411476.. they have all the latest Verbatim media, and do free home delivery.
Which drive are you using, btw?