As I responded to you earlier, you don't have to sell more units to make this work. That's because you're slashing production costs.
If that's not clear, let me give you an example. Let's say it costs you $9 to make something, and you sell it for $12. But then you find a way to make it for $3 and you start to sell it for $6. You don't have to sell more units to make that work, although you would sell more.
If you try to argue that something that's already working won't work, then you'll be fighting an uphill battle.