An observation timeline records what a source showed at particular times. It is not automatically a transaction history, and the distinction matters when bids change or a listing disappears.
Label each timestamp
Separate the first time WebOneWord saw the record, the most recent check and any source-supplied closing deadline. These dates answer different questions. An import timestamp should not be presented as a sale date.
Interpret amount changes in context
A higher auction amount can indicate a new observed bid, but the source's format and conditions still matter. A lower number might reflect a reset, a different price basis or a changed listing rather than a discount.
Do not calculate a fixed-price reduction across two observations with different currencies or offer types.
Treat gaps as gaps
A failed request, source timeout or missing feed item does not identify the buyer or prove that the auction closed. Keep prior evidence and mark uncertainty instead of inventing an outcome.
Verify the current action at the source
Before bidding, inspect the live listing, the relevant deadline, participation requirements and complete terms. A cached research page is not an execution interface.
Keep completed-sale claims separate
A final amount belongs in sales research only when a source actually reports it as a transaction. Preserve the source and its date semantics.
Use marketplace research for venue context and Price Drops for comparable fixed-price observations. An auction timeline is useful precisely because it does not pretend that every observed change is a completed sale.
Maintained by WebOneWord Team. Last reviewed: 2026-10-07.