Here you go 
Tried looking and joining the forum but you have to be an active member to even join the forum - Rubbish!
Interested but can't see any details about the deal going 
The extract below is from the post on the ABS Forum. The guy concerned has had dealings with K-Mac before so is familiar with them.

The main point of Gavin posting was to see if members on here wanted to join forces on a group order to make it a viable proposition.
I suspect that because Chris has got the ball rolling this end, it is awkward for people to suddenly jump ship to the K-Mac camp, which would leave Chris in an embarrassing position of contacting Powerflex and saying 'forget it, we're sorted'.

Perhaps Chris could give his feelings on this joint venture, as the guys on ABS have done this before so it not a pipe dream from their point of view.

I appreciate that non-forum members of ABS can not read the ABS Forum but I don't mind keeping people up to date if there is genuine interest. I won't use their quotes though as it is a locked forum.

This doesn't affect me either way as I didn't order any from either camp.

I just sensed that ABS members were surprised that there was so little interest in taking another avenue.
Extract from the ABS post below.
Admins: Please edit or delete if this is not appropriate. I have removed any personal reference. IF I did a group buy on
A - K-Mac - Poly Donuts for Carlton/Senator B and LC/LO - to the original spec of the last buy
B - K-Mac - Poly Donuts for Omega - modified version of above which correct bush height to the original poly spec of the last buy
C - K-Mac - Poly Donuts for Monza/Senator A/Bitter to the spec on my car
What would be the take up??
<snip>..........(I've been trialling a prototype set for 3 years and they've been excellent)
Just a feeler
Current price for the Senator/Carlton LC/LO ones would be Just shy of £200 for a pair if ordered individually direct from K-Mac
I reckon I could get close to half that price on a group buy again if I had a reasonable qty to order
No commitment required other than a Yes - Qty - Set A or B
Less than 10 sets and it's not worth the effort <snip>.....
Regards
Alan