Marketing is used to attract both new sellers and new buyers. It is important to compare marketing expenses growth with revenue growth, since if the revenue growth lags behind then marketing is innefective.
Last reported quarter 2021 Q2 it was $167.47 million, up by 46% year-over-year from $114.71 million. From $215.57 million in 2019 it increased by 132% to $500.76 million in 2020.
Source: Etsy Quarterly Results.