“You could offer a specific bundle that's getting a deal for maybe not the whole year but a half year or a quarter. You don't necessarily have to merchandise that as part of your normal options all the time, but if somebody is churning and the reason is the length is not right, you can offer it then.”

Keep custom-duration bundles off the paywall — pull them out only for churners

Keep a 3- or 6-month bundle off the standard paywall and pull it out only for churners citing duration as their reason. Custom length unlocks a save without permanently cheapening the catalog or training every user to wait for the discount.