If you’re not tracking it you’re not managing it. Newsagents who do not track every stock item that enters and leaves their business are more likely to find their business harder to sell. The excuse of I don’t have time doesn’t work as the time involved is not excessive. A newsagency purchase fell over recently because the vendor did not have accurate data including purchase price and, importantly, time in-store.
A newsagency with accurate data is more appealing to buyers.