A nudge to add a discount

A shop that sells Subscribe & Save only at 0% now sees a discount suggestion card, both on the Plans list and on the page of any 0%-discount plan group.

The card lets the merchant pick 5%, 10% or 15% off, then shows a confirmation naming every plan and group that percent will be added to. Nothing changes until that confirmation is accepted; declining or closing the card leaves every plan's pricing exactly as it was. Accepting writes the chosen percent to every plan in the group on Shopify in one pass, and the card then shows which plans it was added to.

Existing subscription contracts keep the price they were already billing; the new discount only applies to a plan going forward, the same as if the merchant had set it by hand on each plan individually.