PRICING, it seems, is the name of the cellular game. Whether the service providers across the country are offering peak tariffs (the ceiling of Rs 16.80 per minute being charged by the Delhi duo, Airtel and Essar) or a rock bottom of Rs 2.70 a minute by Koshika Telecom in Bihar, UP and Orissa, all telecom companies prefer to believe they have hit upon the right formula to maximise revenues. For instance: