Maximum Motorsports usually passes any factory deals along.
I wouldn't buy them even on sale. I replaced a mismatched set of struts and shocks with the DA Koni's a couple years ago and my times went up by 2 seconds. I spent all weekend trying to find the right setting, even using the help of others that had experience with them. I sold them and bought the MM race valved Bilsteins and never looked back. I go to the track to drive, not tinker with parts.
'03 Cobra-529rwhp, '95R #201, '90 GT w/ IRS, 2015 Focus ST, 2012 GT track car