Frustrating to find that they're more expensive than regular studs - they ought to be cheaper because they need less wood to make, less mass to transport, etc.
The actual manufacturing steps I'm sure are all automated, and not exactly complex, so the added manufacturing steps should be far outweighed by the reduced raw material and logistics cost.
I'm going to guess the increased price is some combination of 'we have a patent on it' and 'we charge more because there are no competitors, because we have a patent on it'.
If you don't want to click it's T-Studs - 2x3s with diagonals dowels with a 1.5 inch air gap