Strategy Methodology

Auction Sniping

A strategy that places bids in the final seconds of a timed auction to minimize competing bidder response time.

In timed auctions (eBay, TCGPlayer, estate sales), early bids reveal demand and invite counterbids. Sniping places the bid as late as possible — typically within the final 3–10 seconds — so competing bidders cannot respond before the auction closes.

The botwir3 snipe module monitors auction end times, evaluates the current price against the configured maximum, and proposes a bid at a configurable offset before close. The gate validates that the proposed bid amount stays within the configured size constraints. The adapter submits the bid to the platform at the configured time.

Sniping does not guarantee winning the auction. Another sniper may bid higher. The platform may experience latency. The item may already exceed the configured maximum. The module times and proposes. The outcome depends on the market.

Sources

Roth, A. E. & Ockenfels, A. (2002). “Last-Minute Bidding and the Rules for Ending Second-Price Auctions: Evidence from eBay and Amazon.” American Economic Review, 92(4), 1093–1103.Demonstrated that sniping is a rational strategy in hard-close auctions.
Ockenfels, A. & Roth, A. E. (2006). “Late and Multiple Bidding in Second Price Internet Auctions: Theory and Evidence Concerning Different Rules for Ending an Auction.” Games and Economic Behavior, 55(2), 297–320.Extended the analysis to multiple bidding strategies and auction design.

Used in

◎Auction Sniping module — builder

See this in action

→ tcgplayer→ ebay

Related

→ Spread→ Slippage→ Edge→ Position Sizing
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