Amazon cost of sale is the cost vs sales ratio on Amazon.
Example:
100 EUR revenue / 10 EUR advertising costs * 100%
10/100 * 100% = 10% ACoS.
Amazon cost of sale is the cost vs sales ratio on Amazon.
Example:
100 EUR revenue / 10 EUR advertising costs * 100%
10/100 * 100% = 10% ACoS.