If you are waiting to buy the Nokia C6 , E5 or C3 in USA, then the good news is that the US Prices for these phones have been posted on the Nokia store.
Nokia C6 – $309 – Rs.14427 approx (Black / White)
Nokia E5 – $259 – Rs.12093 approx (Black)
Nokia C3 – $129 – Rs.6023 approx (Slate)
If you are planning to buy these in USA , check out the 3G Frequencies of the device at the time of purchase,