Hi, Deborah. Let me share with you some information about how bundled items work in QuickBooks Online (QBO).
QuickBooks displays information depending on the source. When setting up bundle items, you'll only ask to add the bundle item name, SKU, description, product/service you want to add with their quantities. This is the reason why the cost isn't added for this type of item on the Product and Services window, unlike inventory items.
At this time, you may review the items that build your bundle and check their costs manually.
On the other hand, you can always adjust the cost of your items when recording your transactions from the Rate column.
For more information about how bundles work in QuickBooks, check out this article: QuickBooks Bundles and Reorder Points.
In case you want to change product types in the future, you can use this link as your guide: Change product and service item types in QuickBooks Online.
If you have any other follow-up questions about bundles, let me know by adding a comment below. I'll be right here to provide additional assistance. Keep safe!