I have removed the field "Purchase Price" from all our forms because it is confusing to everyone. We deal in multi-currency so I using "Item Defined Cost" which is calculated from the "Preferred Vendor Cost" and converted into local currency each night using a scheduled mass update.

Recently I have offered to run a staff shop for one of my suppliers and I want to make a special price list based upon cost +10%. However the only way to update customer price levels is with Lists/Mass Update/Update Prices, the problem is that the source cost prices for this function is "Purchase Price". The problem I have is the "Purchase Price" field is filled with