Seven concurrent runs again, the third straight week at that count. Same format, same offer, a different mix of markets. This week works as a control case: the volume extremes behaved exactly the way the textbook says they should, which makes the places where the rest of the data does not line up more instructive, not less.

The week closed at 24,263 tickets and $1,203,439.83 in total revenue, against $134,466.60 in media investment. Blended cost per acquisition landed at $5.54 a ticket; blended return on ad spend at 8.95x. Both improved on the prior week while ticket volume slipped by roughly 1,900. Fewer tickets, cheaper tickets: a reminder that the blended rate moves with the mix of runs as much as with any single run’s performance.

Across the 7 runs, CAC ranged from $4.17 to $10.65 per ticket, roughly 2.6x top to bottom. Both ends of the volume range held. The largest run, 6,942 tickets, bought at the lowest cost of the week; the smallest, 692 tickets, at the highest, more than $3.60 above the next most expensive run. In between, the order is loose: three runs of very different size, from 2,190 to 3,663 tickets, sit within 30 cents of each other.

Net revenue per attendee ranged from $38.51 to $46.82, and neither CAC extreme owned a yield extreme. The cheapest run to acquire returned $45.46 per person, solid but $1.36 short of the top. The most expensive returned $40.06, which is not the floor: that belongs to a mid-table run at $6.07 CAC, which acquired reasonably and then yielded the least. Efficiency on the way in and value per head on the way out are two separate measurements, and this week they disagree at both ends.

Run count holds at 7 next week. Whether the volume extremes keep behaving is the first thing to check.