I imagine since the build day is scheduled, the client will have time to prepare their ten pages of content (it might be less and some recycled from an old site). If they don't have it ready before the build day ends, they could add it themselves or have Adam do it at the cost of extra time, right?

This is a really interesting experiment. People often want things fast and any website from Adam should be worth $1,000. Everything I've seen from him has great polish.

It would be great to see this succeed and scale with a team.