The screen looks like a 749 or maybe a SSie screen. It's not a 748 one though.
Those calipers are the "common-or-garden" 4 pads. £135 a piece new.The lettering has been painted in red. If he gave £350 a piece for them then OUCH!! The ones on the tecmoto site at £350 are the GP calipers but not 4 pad.
I paid £175 for a set of those calipers (no hoses though adam ) - however I did pay extra due to the fact that they were originally on Lord Tim's 996R so it was well worth it!!