It's worth remembering guys, that the price is £3000 for this to happen, how ever many units are actually requested ( not including taxes and postage ). Otherwise it's a no go.
The only other option that I'm aware of, is to replace the whole unit. These are rarely available, and at best, brand new ( still made of chocolate ) are about £180 a pair, and not much cheaper used, unless your lucky.
As a back up plan, and only if we can't get 250 committed members, would there be 100 members committed to paying £30 ( + tax & postage ) to make this a success?
I personally still think this is a great value long term fix for these,considering all the hard work has been done already by Rob.