If you are selling any item to a vendor you will get less than the item's value.
Value and selling price come in pairs and never change. The following is a list of those pairs for all kinds of stuff.
It can be used to look up what you get for any value in cash from a vendor. It also serves as a lookup for wikia editors on this wiki, if they add item descriptions from inventory screenshots and don't have the actual selling price at hand.
