Now, we can create Virtual Product Bundles that don't require sending a physical bundled product.
The virtual product bundles tool for FBA lets brand owners create ‘virtual’ bundles made up of two to five complementary ASINs which are purchased together from a single detail page.
Eligibility Criteria:
To be eligible to be added to a virtual bundle:
ASINs need to belong to a brand that you own and that is registered in Brand Registry.
ASINs need to have active FBA inventory in the 'New' condition.
The following cannot be included in virtual bundles: gift cards, electronically delivered products (like digital music, video, and books), and renewed/used ASINs.
Product bundles can be created only in the US Amazon store.
Reference: https://sellercentral.amazon.com/gp/help/G87HAE6PMKKM23Z7(Login required)