In agility there is a function that allows a price to be set for a specific customer only.
This can be found in customer details:
Select the Exception Pricing Card and this screen appears:
Search for the stock code by selecting the search glass
Select the unit from the drop down
Once this is done the price will be shown
Enter the price for the customer
If the price is for a specific date range select the Valid ti this will then automatically stop giving the price after that date
Press Add and the code will appear in the space above
Once all codes have been entered select EXIT
Then save the Customers Details Screen
EDIT: Select the code to be changed
DELETE: Select the code to be removed