Dark LegacyBid on an auction.
Syntax: auction bid|b <id> <gold>
When you place a bid, you pay gold equal to your bid. Your bid must be 5% above the last bid. When you are outbid by someone else your money is returned to you via mail. When you are the highest bidder when the auction expires (auctions run for 30 days), the item is sent to you by mail. When your bid equals the buyout amount (if available), you instantly win the auction.
The game also finds it under: bid, bidding, bidding on an auction.