Sandbox extension
The $50 extension is a seriousness filter, not infrastructure markup.
Commercial model
Useful free core. Optional paid depth. Services when they help.
Move Big Rocks should be cheap to try, valuable before any extension purchase, and commercially straightforward when a team wants more depth or more help.
What you pay for
The commercial logic should stay aligned with the product logic.
Charge for optional depth, privileged packs, and services. Keep the operational core strong and self-hostable so the pricing model does not distort the product shape.
Paid packs
ATS, error tracking, web analytics, and enterprise access can be sold as discrete packs.
Professional services
Support sandbox onboarding, production setup, knowledge migration, and private extension development.
Move Big Rocks
Use the same deliberate system in evaluation, delivery, and real operations.
The point of the site is to make the next step obvious. The point of the product is to keep your work, knowledge, and agent operating model coherent after the site is out of the picture.