Glad to hear to again from you, @mb722.

I'm here to share additional insights on how you can create and build your inventory assembly items.

To cover the labor cost in packing your item and other fees, you're correct in creating a service item for it.

1. Go to Lists menu.
2. Choose Item List.
3. Click Item drop-down, then select New.
4. Choose Service.
5. Enter a desired name of the item and specific amount.
6. Choose the Account where you want to post your property maintenance income and expenses.
7. Click OK.

You'll also need to create an inventory item for each item or raw material that will be part of the inventory assembly.

Here's how to add an inventory item:

1. Go to Lists menu.
2. Choose Item List.
3. Click Item drop-down, then select New.
4. Choose Inventory Part.
5. Enter a desired name of the item and specific amount.
6. Choose the Account where you want to post your machinery maintenance expenses.
7. Click OK.

Once completed, you can now create the assembly item with the service item on it.

By following this process, you'll  be able to track the total cost for each item included on each assembly.

Feel free to visit us here in the Community if you have other questions about creating assembly item in QuickBooks. I'm always here to help.