about $4 billion
About how much did rival house Sotheby's sell annually around 2018?
Sotheby's trails Christie's slightly but remains one of the world's top auction houses by sales.
Source: Wikipedia, Auction (2018) en.wikipedia.org
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How well do you know auctions and bidding?
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What's the record price ever paid for a single artwork at auction (Leonardo da Vinci's Salvator Mundi, 2017)?
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Today's round
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about €2 billion
In 2019, Russia auctioned off crab-fishing quotas for about how much?
Government auctions of natural-resource rights, like fishing quotas, can raise enormous sums.
Source: Wikipedia, Auction (2019) en.wikipedia.org
about 132 million
About how many active buyers does eBay have worldwide?
Even decades after its founding, eBay remains one of the biggest online auction and marketplace platforms.
Source: Wikipedia, eBay (2023) en.wikipedia.org
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How does BidSurvey.com work?
Each question asks you to guess a real number about auctions and bidding. After you answer you see how everyone else guessed, then the real figure and where it comes from.
How is the daily round scored?
Four stats and one opinion poll. A correct guess earns 100 points plus up to 50 for speed, with a combo bonus for answers in a row. The range next to the right answer earns 40. Opinion polls earn 25 for having your say, and nailing every stat adds 150.
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