• It's a good idea to make sure that the products you're working with all have Shipping Dimensions and Weight. You can find these on the products' Timber Tab. This information is sent to FedEx when retrieving a quote.
    Product Weight and Dimension fields
  • There are two ways to adjust the pricing estimates in the FedEx Configuration. You can use the options under the FedEx Services Heading, or the Markups. I like to place an order and go to the Checkout page in one browser tab. In another tab, visit your site URL and add this:/admin/store/settings/quotes/methods/fedex (be sure you are logged-in). You can make adjustments to the configuration and Save them....then use your Checkout Page tab to refresh the quotes to see your changes using this Calculate button:
    Calculate Shipping Cost screenshot

You should be able to dial-in the quote pretty closely with the actual prices you are seeing from FedEx.