Sunnyday, I would caution against repairing the driver yourself. The reason being, when someone who really values their speakers attempts this type of job, success is very hard to come by. Several things beyond just replacing the surround come into play, and though the driver will "work", it will be far from optimal.
My recommendation is to send both drivers to Bill Legall at Millersound, (215) 412 - 7700. For about half the price that B&W quoted you, he will take care of all the little odds and ends that make the job successful (spider, voice coil, ensuring the cone alignment is correct, as well as doing the surround job better than any of us laymen). And, both of the drivers will be the same when he ends up with them, which is one of the MOST overlooked aspects of loudspeaker driver repair. Believe me, for what he charges, and the quality of work he puts out, it's the biggest bargain in audio.
My recommendation is to send both drivers to Bill Legall at Millersound, (215) 412 - 7700. For about half the price that B&W quoted you, he will take care of all the little odds and ends that make the job successful (spider, voice coil, ensuring the cone alignment is correct, as well as doing the surround job better than any of us laymen). And, both of the drivers will be the same when he ends up with them, which is one of the MOST overlooked aspects of loudspeaker driver repair. Believe me, for what he charges, and the quality of work he puts out, it's the biggest bargain in audio.