Step 1: Menu -> Project Settings -> Map Options
Step 2: All Options / Upgrades will be displayed. You can adjust the fields by clicking on the price you wish to change.
After you click on a price to change, you will have to select whether it is included with all units, Not available at all, or available for an extra charge.
Step 3: If an entire column needs to be adjusted, you can select the group change function.
You can select based on Floor Plan and Floor.
Step 4: When you are done, be sure to save your changes.