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Siebel eAuction Guide > English and Modified English Auctions > Bidding Rules Used with an English Auction >

Multiple-Quantity Auctions

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General bidding rules for a multiple-quantity English auction are as follows:

Winners are determined by ranking bids in order of highest price, then by earliest timestamp.
Initially, the starting bid defaults to the minimum amount a lister will accept for an auction item.
The lowest valid bid refers to the lowest bid necessary to successfully win at least one item in a given auction item.
If some of the items in an auction item have a winning bid, the lowest valid bid defaults to the lowest winning bid necessary to win at least one item in the auction.
If no bids have been placed on an auction item, a user's initial bid must at least match the auction item's starting bid amount.
If all items in the auction have a winning bid, the lowest valid bid defaults to the lowest winning bid plus the bid increment.

In addition, the following rules apply to a winning bid in a multiple-quantity auction:

Users must bid on at least the same number of items in the auction item on which they have previously bid.
If bidding on the same number of items, the bid value must be increased.
If bidding on a greater number of items, the bid value does not need to be increased.

NOTE:  For examples of single-quantity and multiple-quantity English auctions, see Bidding Examples — Bid Timestamp Option, along with other bidding scenarios in that chapter.

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