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 26,448 tickets and $1.32M in total revenue, against $141,035.73 in media investment. Blended cost per acquisition landed at $5.33 a ticket; blended return on ad spend at 9.33x. Those are the numbers that get quoted. The more useful ones sit underneath them.

Across the 7 runs, CAC ranged from $3.90 to $7.36 per ticket. The top of the range behaved the way the pattern predicts. More volume bought a lower cost per acquisition. The smallest run by volume was not the most expensive to acquire. A larger run carried the higher CAC.

Net revenue per attendee ranged from $40.30 to $50.88 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 21 trims the lineup down again. Whether the same read holds with fewer runs is the next test.