Amazon defines this as:
Includes commissions, related fulfillment and shipping fees, and other third-party seller services.
2014: $11.747 billion, 2015: $16.086 billion, 2016: $22.993 billion.
Last reported quarter 2023 Q3 it was $34.34 billion, up by 20% year-over-year from $28.67 billion. From $103.37 billion in 2021 it increased by 14% to $117.72 billion in 2022.