Events Promotion Masterclass – Week 17 2026

The Numbers Behind Week 17 | Masterclass | Goolbook
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Masterclass · Week 17

The Numbers Behind Week 17

6 concurrent runs again this week, the same count as last week.

Tickets sold
21,987
Total revenue
$1.14M
Blended CAC
$5.62
Blended ROAS
9.2x

The run count holds steady at 6 this week, unchanged from last week. Same format, same offer, a different mix of markets under the same conditions.

The week closed at 21,987 tickets and $1.14M in total revenue, against $123,549.50 in media investment. Blended cost per acquisition landed at $5.62 a ticket; blended return on ad spend at 9.20x. Those are the numbers that get quoted. The more useful ones sit underneath them.

Across the 6 runs, CAC ranged from $4.12 to $7.74 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 carried the highest CAC, the way the pattern would predict.

CAC vs. tickets sold
6 concurrent runs, Week 17
$4 $5 $6 $7 $8 5,000 Tickets sold CAC ($) 2,452 tickets highest CAC: $7.74 6,591 tickets lowest CAC: $4.12
Two of the 6 runs carry direct labels: the volume and efficiency extremes. The other 4 sit in between, from $5.29 to $7.24 CAC (muted, unlabeled).

Net revenue per attendee ranged from $41.73 to $48.66 across the same 6 runs. Cost per acquisition and net revenue per person moved independently this week. Neither CAC extreme produced a matching extreme on the per-person yield side.

Week 18 adds runs back to the lineup. Whether the read changes with more data is the next test.