Yahoo! Auctions is a service set up by Yahoo! in 1998 to compete against eBay.
Last reported quarter 2019 Q1 it was ¥233.90 billion, down by -0% year-over-year from ¥234.70 billion. From ¥934.60 billion in 2017 it increased by 1% to ¥940.20 billion in 2018.
Source: Yahoo Quarterly Results. Local currency used, not US$.