The PSLV has about 1/3 the payload of the Falcon 9. On paper it's roughly cost competitive with Soyuz and the current Falcon 9 prices (which is no coincidence, there's little advantage to undercutting the competition, yet). In practice though it's not a serious competitive threat to any existing launcher because it has such a low payload capacity and thus can't be used to launch the vast majority of satellites.