There will usually be an estimate of what price the lot will fetch. In an ascending open auction it is considered important to get at least a 50-percent increase in the bids from start to finish. To accomplish this, the auctioneer must start the auction by announcing a suggested opening bid (SOB) that is low enough to be immediately accepted by one of the bidders. Once there is an opening bid, there will quickly be several other, higher bids submitted. Experienced auctioneers will often select an SOB that is about 45 percent of the (lowest) estimate. Thus there is a certain margin of safety to ensure that there will indeed be a lively auction with many bids submitted. Several observations indicate that the lower the SOB, the higher the final winning bid. This is due to the increase in the number of bidders attracted by the low SOB.
Lots at police auctions range from brand new or graded from A down in used condition, or goods may be slightly marked. A good example would be high quality white goods. All items listed in any police auction are available for viewing and inspection prior to the sale. Faulty or damaged goods should be clearly marked, and faults are outlined by the auctioneer during the auction.
The Romans also used auctions to liquidate the assets of debtors whose property had been confiscated.[8] For example, Marcus Aurelius sold household furniture to pay off debts, the sales lasting for months.[9] One of the most significant historical auctions occurred in the year 193 A.D. when the entire Roman Empire was put on the auction block by the Praetorian Guard. On 28 March 193, the Praetorian Guard first killed emperor Pertinax, then offered the empire to the highest bidder. Didius Julianus outbid everyone else for the price of 6,250 drachmas per guard,[citation needed] an act that initiated a brief civil war. Didius was then beheaded two months later when Septimius Severus conquered Rome.[8]

No-reserve auction (NR), also known as an absolute auction, is an auction in which the item for sale will be sold regardless of price.[36][37] From the seller's perspective, advertising an auction as having no reserve price can be desirable because it potentially attracts a greater number of bidders due to the possibility of a bargain.[36] If more bidders attend the auction, a higher price might ultimately be achieved because of heightened competition from bidders.[37] This contrasts with a reserve auction, where the item for sale may not be sold if the final bid is not high enough to satisfy the seller. In practice, an auction advertised as "absolute" or "no-reserve" may nonetheless still not sell to the highest bidder on the day, for example, if the seller withdraws the item from the auction or extends the auction period indefinitely,[38] although these practices may be restricted by law in some jurisdictions or under the terms of sale available from the auctioneer.
This is the practice, especially by high-end art auctioneers,[64] of raising false bids at crucial times in the bidding in order to create the appearance of greater demand or to extend bidding momentum for a work on offer. To call out these nonexistent bids auctioneers might fix their gaze at a point in the auction room that is difficult for the audience to pin down.[65] The practice is frowned upon in the industry.[65] In the United States, chandelier bidding is not illegal. In fact, an auctioneer may bid up the price of an item to the reserve price, which is an unstated amount the consignor will not sell the item for. However, the auction house is required to disclose this information.

Pay and pickup. Generally, for transactions of $5000 or less, the full payment is due by the end of the day of sale, whereas for higher sale amounts a large-sum deposit might be required. Payment policies should have been outlined at the time of registration, but contact the auction company for more information. Most vehicles will be released on the day of sale, but in some cases a background check of the buyer will be required to be sure they are not the former owner buying the car back.
On-site auctions – Sometimes when the stock or assets of a company are simply too vast or too bulky for an auction house to transport to their own premises and store, they will hold an auction within the confines of the bankrupt company itself. Bidders could find themselves bidding for items which are still plugged in, and the great advantage of these auctions taking place on the premises is that they have the opportunity to view the goods as they were being used, and may be able to try them out. Bidders can also avoid the possibility of goods being damaged whilst they are being removed as they can do it or at least supervise the activity. Financial Group Limited is authorised and regulated by the Financial Conduct Authority (FRN: 303190). The registered office address of both Group PLC and Financial Group Limited (registered in England No. 3157344) is MoneySupermarket House, St. David's Park, Ewloe, Chester, CH5 3UZ. Limited is an appointed representative of Financial Group Limited.
Silent auction is a variant of the English auction in which bids are written on a sheet of paper. At the predetermined end of the auction, the highest listed bidder wins the item.[43] This auction is often used in charity events, with many items auctioned simultaneously and "closed" at a common finish time.[43][44] The auction is "silent" in that there is no auctioneer selling individual items,[43] the bidders writing their bids on a bidding sheet often left on a table near the item.[45] At charity auctions, bid sheets usually have a fixed starting amount, predetermined bid increments, and a "guaranteed bid" amount which works the same as a "buy now" amount. Other variations of this type of auction may include sealed bids.[43] The highest bidder pays the price he or she submitted.[43]