The "Default Price B" option can be set up when an alternative markup over Price A applies to the customer if buying Open Market inventory. This can be set as a Percentage or Dollar amount. The system will consider the Default Price B setting within the customer account when pricing for Open Market inventory. This markup also applies anywhere on the system where the price is suggested from a price list.
Instructions
Go to Setup and select Customers.
Search the customer.
Click on Edit in the Actions column.
Click on Advanced in the Setup tab in the Customer Information modal.
The "Default Price B" also needs to be active if a Price List is being assigned to the customer in order for the pricing within the price list to apply. For more details please review Price lists.