Catalog item cost is not updated in Service Portal
Catalog price calculation is not working properly
Dynamic price calculation is not working in Service Portal
The portal widget used in the page is customised
By default, the catalog item order page is using the 'SC Catalog Item' widget
1. Check the customised widget and use the out-of-box (OOB) version. You can check this as an admin if you go to the page having the pricing/cost issue > Click Ctrl+right-click > Instance in page editor > Check the widget used by the page if it is an out-of-box (OOB) widget.
2. Revert the widget to OOB OR merge and base your customisations from the OOB widget