This has just got a bit trickier, was sold on the Michelins but have just checked the prices on blackcircles. P Zeros just under £600, Conti 6s about £630 and PS4S at £780. The P Zeros have been updated recently and review well, pretty happy with my current ones having covered near 20k miles so not sure I want to spend the extra £180, that's 200 packets of pork scratchings! Hmmm....