Adjusted book value reflects the value of the company, including its assets which are adjusted to reflect market prices. Market value is what a seller expects to receive from a buyer when something is sold in a market. Basically book value is a conservative approach on asset valuation. Is is outdated. Market value is more realistic and business approach. This is an updated valuation and reflects its current value. I have to say that market value would be more accurate method, because it is the actual value of services or products that are sold or bought.