A cart's total will be "TBD" if you haven't yet chosen a lending model for one or more titles in the cart. Use the following steps to choose a lending model for these titles:
- From the Carts page, click the cart with the "TBD" total to open its details page.
- Titles with unspecified lending models will be shaded in yellow. Click the Select link in the "Lending model" column for one of these titles.
- In the pop-up window that appears, specify the lending model for each of the applicable titles.
- Select Save to update your cart.
After you've chosen a lending model for all the titles in your cart, you can proceed with checkout.