You can get standard Campy Record brakes which are engraved Campagnolo with the flat QR levers for much less - probably £50-85 a set secondhand or up to £200 or so NOS. These will only be out by a year or so. But the correct rubber hoods will set you back another £40-80. The ones which are not engraved are verry rare and you'll be very lucky to find any though they do very occasionally turn up - I think I have only found two or three pairs over the last eight years of going to almost every cyclejumble...
New (old) Kona fire mountain