If you are a MIXIT user with the Support role then you can easily enable the retail list prices functionality for the shops you manage by following the below steps:

• go to Manage >> Shops >> search your shop;
• go to the "Pricing Module" section and tick the checkbox "Retail list prices are enabled for this shop";
• click the SAVE button.

Note: make sure that the shop is first upgraded to Price-Per-Can.

Once enabled, the users in the shop will see the column List Prices in the Settings >> Inventory page.