You’ve just changed the unit price of your stock item in the inventory, and the total value hasn’t been updated? When changing the unit price of a stock item, the total value isn’t updated automatically.
To update this, you will need to remove the entire stock of the stock item by heading to the "Adjustments" section > Click on " - Remove stock":
And remove the entire stock to set the stock level to 0 as shown below:
So your stock and your total value are both showing 0:
Once done, on the "Adjustments" section, click "+ Add stock" to add your stock back to its original amount. In this example, I had 10 in stock, so I’m adding back 10:
When you check the total value now, it will display the correct amount.
You will need to follow this process for every stock item whose price you are changing if you want the total value to display correctly.