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. What makes the week worth reading is the width of the gap between them: the most expensive ticket acquired cost more than twice what the cheapest one did.

The week closed at 17,789 tickets and $872,873.50 in total revenue, against $138,245.94 in media investment. Blended cost per acquisition landed at $7.77 a ticket; blended return on ad spend at 6.31x. Those are the numbers that get quoted. The more useful ones sit underneath them.

Across the 7 runs, CAC ranged from $5.49 to $11.45 per ticket. Both ends of the volume range behaved exactly the way the pattern predicts. The largest run, 3,981 tickets, bought the cheapest acquisition of the week; the smallest, 1,591 tickets, paid the most. The five in between are noisier, spanning $6.69 to $9.53 with no clean ordering, but the two extremes line up.

Net revenue per attendee tells a different story. It ranged from $38.39 to $43.76 across the same 7 runs, and the run that acquired most cheaply posted the lowest per-person yield of the week. Cheap tickets and valuable tickets were not the same tickets. A run can win on acquisition cost and still finish last on what each attendee is worth once they are through the door.

Seven runs again next week. The volume spread widens; whether the cost spread follows it is the thing to watch.