I've been told these are being packaged up to send to me! Once I've got one to package and weigh I'll let people know postage costs.
Seems I got some duff information whilst my main contact was out of the office...
No diffs have been sent to me yet, as they wanted to ship the complete batch - and as per my earlier email to you all, they're having to do another production run to fulfill our order. An unfortunate side effect of us being slow in placing the order whilst everyone paid!
Should be getting a call back tomorrow to confirm delivery dates and postage costs, and will update you all again then.
Good news for people that missed this first time round is that there should be another few diffs available at the Group Buy price - I'll hold a 'reserves' list, and it'll be first-come first-served.