SUNK COST is the cost expended that cannot be retrieved on a product or service.
PROFIT & LOSS ACCOUNT shows the net profit which is left after all relevant business expenses have been deducted.
VALUE is a term that defines the worth of a thing. The term is usually preceded by the word, or words such as Fair" or "Fair Market", and it is usually defined in the document where it is found. Not all value for an item is the same, i.e. value is usually perceived.
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