One click in the builder header re-anchors your opening price to the live market before you ship.
The builder header shows your opening price next to the live market price.
While you configure, the market moves. A stale opening price skews the allocation.
Press 'Set to market': the opening price snaps to the live price and amounts recalculate.
If you skip it, the review step warns when the deviation is significant.
This flow is automatically verified on every release.