A stack is a month of someone’s routine: a few reformer classes, a sauna, a recovery session. There are thousands of ways to put one together from the price book. The planner finds the good ones.
What it balances
Price within a band people already spend. The best bulk rate we can get. And fit — how well the bundle covers what that person actually needs, not just what’s cheapest to buy. Fit is weighted by hand for each stack, because what a Sculpt member needs isn’t what a Performance member needs.
Locking it in
The planner suggests; we choose. When a bundle is right, we lock it in and it goes into a log. The stacks on the landing page today are three locked bundles from that log.
No copies
It reads the same price book that’s re-checked every morning, never a local copy. A planner working from yesterday’s prices would quietly promise the wrong rewards.