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 24,275 tickets and $1.23M in total revenue, against $151,306.72 in media investment. Blended cost per acquisition landed at $6.23 a ticket; blended return on ad spend at 8.12x. Those are the numbers that get quoted. The more useful ones sit underneath them.

Across the 7 runs, CAC ranged from $4.89 to $9.16 per ticket. At the top of the range, the correlation broke again. Scale did not buy the lowest cost per acquisition this week. The bottom of the range behaved as expected. The smallest run was also the most expensive to acquire.

Net revenue per attendee ranged from $31.42 to $47.95 across the same 7 runs. Net revenue per attendee did not track CAC this week at either extreme. The cheapest and the most expensive runs to acquire both landed somewhere in the middle of the per-person yield range.

Week 11 holds the run count steady at 7. Whether the pattern breaks the same way again is the next test.