One aspect of bundles is that you can have more than one of a product in a bundle. You can do this in two ways:
When you add products to a bundle multiple times, you can specify prices for each product instance. For example, you could add three separate 10MB data plans and price the first at $10, the second at $5, and the third at $3. If you instead have just one 10MB data plan and change its quantity to 3, that price applies to all three plans.
Service Design Center uses a change management process to track and approve all changes to any product. All of these changes, including additions, edits, and deletions, must go through the promote-approve-deploy process before they become available.
Any changes you make (change a name, change a price, add or delete a product from a bundle, etc.) to any product do not affect any users that already have the product.