How can I group item and add a discount for the combo price?
How can I group item and add a discount for the combo price? For example, I want to put item A $30 and B $50 together and sell them at $60.
How can I group item and add a discount for the combo price? For example, I want to put item A $30 and B $50 together and sell them at $60.

This is directly from QB Help file:
Price of a group item is the sum of the items in the group (although you can include an item in the group for a discount or additional charge to adjust the simple sum calculation).
You could also move away from group and do assemblies as well.
Post back and let us know how things work out for you.