Choose the Monitor price list that article prices are taken from.
Leave it empty to use the article's last sales price if it has one, otherwise its standard price.
Good to know
Choose from the price lists in your Monitor.
If the list is empty, check that Monitor is connected. An empty list almost always means the connection, not the setting.
If a price list is missing, create it in Monitor first, then click Clear Cache on the settings page so the list is refreshed.