Suppliers can use the "Add Additional Proposed Item" to submit proposed line items to their proposal. However, when you are checking the Bid Summary table on the "Manage Deal" page to compare prices, the proposed line items are not automatically added to the bid summary table.

Adding the Proposed Line Item prices to the Bid Summary Table

1) To see the prices, you will need to tick the box "Proposed Items" under Proposal Received on the "Manage Deal" page. 

2) Once you have ticked the box, the prices will immediately appear for you to see.