CBM Rolling Average is the average cost per cubic meter (CBM) of your Pre-bought freight from FreightEnZone.
For example, if you bought 5 CBM at £640 and later you bought 10 CBM at £1,070, you would have purchased 15 CBM overall with a total cost of £1,710 (£640 + £1,070). This would mean that each CBM would have cost you an average of £114 i.e. £1,710 divided by 15. So in this example, the Rolling Average is £114.
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