Hello @TC2721!
Thank you for your post in the community. I looked into this, and it appears that you can find some of this information in our insights tab, which has the shipping cost report. You can access your stamps account for the other report through the carriers tab in Shipstation by clicking the View reports option next to the USPS account (if the US). Here is the help center article that talks about insights and reporting.
If you need any other assistance, you can always contact support@shipstation.com.
Happy Shipping!
-Cara
