New or amended prices should sync to the Web portal automatically, but if you want to force a sync over you can do so by following the below steps.
In Weighsoft
Hover of Administration
Click on System Settings
Click on Web Portal on the left of the screen
Scroll down to the Sync Lookups section.
Tick all the Prices options
Scroll tot he bottom of that section and click on the Sync Lookups link
That will start a sync of all the prices in Weighsoft over to the portal.