• EBay average gross margin for 2023 was 72.27%, a 0.88% decline from 2022.
• EBay average gross margin for 2022 was 72.91%, a 5.5% decline from 2021.
• EBay average gross margin for 2021 was 77.15%, a 3.36% decline from 2020.

Gross margin can be defined as a company's total sales revenue minus its cost of goods sold, divided by the total sales revenue, expressed as a percentage.