7 concurrent runs again this week, the same count as last week. Same format, same offer, a different mix of markets under the same conditions.

The week closed at 21,698 tickets and $1.14M in total revenue, against $131,003.64 in media investment. Blended cost per acquisition landed at $6.04 a ticket; blended return on ad spend at 8.69x. Those are the numbers that get quoted. The more useful ones sit underneath them.

Across the 7 runs, CAC ranged from $5.18 to $14.80 per ticket. The largest run by volume was also the cheapest to acquire this week. The correlation between scale and efficiency held at the top of the range. At the bottom of the range, the read held. Less volume meant a higher cost per acquisition.

Net revenue per attendee ranged from $41.64 to $48.71 across the same 7 runs. The most expensive run to acquire also produced the lowest net revenue per person, as expected. The cheapest run to acquire, though, was not the top performer on a per-person basis.

Week 13 holds the run count steady at 7. Whether the pattern breaks the same way again is the next test.