I really don't like when company says limited edition and don't give the number of Unit they are planning to make or market they are going to release to. We never know if it is some marketing gimmick or what.
I really appreciate Sennheiser for it. When they launched HD800SA they upfront told that they would make some 850 or 750 Unit of it to mark 75th anniversary which makes sense but making this Unit which was supposed to be incremental upgrade of BL as special edition is beyond my comprehension.
Agree!
From my perspective it is just a marketing strategy since price difference would not cover additional manufacturing costs. As you pointed out there would be a specific number of units made on the iFi site and maybe handmade numbering scheme would be used. Keep in mind that Snickers bars used to come in limited edition too for like 2 years and in billions.