The Auction Aggregator Landscape: Who Covers What (2026)

We index government surplus. That is the whole of what we do: 56,000+ live listings from 32 official government sources across the US, UK, Canada and Australia, de-duplicated into one search.

It is also a narrow slice of the auction world. Resellers who source from government surplus almost always source from somewhere else too, and the questions we get most often are about the somewhere else: where do storage unit auctions live, is a pallet of returns worth buying, who lists estate sales. This guide answers those by mapping the categories we do not cover and pointing at the sites that do.

Nothing below is a competitor to us and nothing below is a recommendation to buy. It is a map. For the government corner specifically, see the government auction aggregators ranked and the 16 marketplaces and what each charges.

The categories at a glance

Storage unit auctions

Where to look: StorageTreasures, Bid13, Lockerfox

When a storage tenant stops paying, the facility can auction the unit's contents under state lien law. You typically bid on the unit as a whole, sight-unseen beyond a doorway look, which makes it the highest-variance category on this page.

Who it suits: flippers who can price a mixed lot fast and have somewhere to put it. The unit must usually be cleared within 24 to 72 hours of winning, and you take everything including the worthless parts.

How it differs from government surplus: we tell you what an item is and what comparable ones sold for. A storage unit is a sealed box by design, so no comp layer is possible. If you want the pricing certainty, this is the wrong category.

Worth knowing: the online layer is consolidated onto a small number of platforms, with StorageTreasures the most widely used and owned by facility-software company OpenTech Alliance. Facilities also still run live on-site auctions, and StorageTreasures lets you search for in-person sales as well as online ones, so treat any single platform as a partial view of the category rather than a complete one.

Estate sales and estate auctions

Where to look: EstateSales.net, EstateSale.com, EstateSales.org

The contents of a home sold off after a death, downsize or move. Two formats exist and they behave differently: the traditional tag sale, where a company prices everything and opens the house for a weekend, and the online estate auction, where the same contents are catalogued and bid on.

Who it suits: anyone sourcing furniture, tools, collectibles, jewellery or antiques. Depth on a single high-value item is better here than in any other category on this page, because estate companies catalogue and photograph individually.

How it differs from government surplus: government lots skew utilitarian and bulk. Estate sales skew household and individual. Very little crossover in what actually sells.

Worth knowing: EstateSales.net is the largest of the three, running since 2002 with several thousand listing companies and ZIP-radius search. The key point is that these are competing directories rather than aggregators of one another, so unlike government surplus there is no single search that spans the category. Checking two of them is the practical approach, and the online-auction side runs across general auctioneer platforms on top of that.

Liquidation, pallets and retail returns

Where to look: B-Stock, Liquidation.com, Direct Liquidation

Retail returns, overstock, shelf-pulls and closeouts, sold by pallet, truckload or case. This is the closest thing to government surplus in economic shape: an organisation with goods it does not want, selling in bulk, priced to clear rather than to maximise.

Who it suits: resellers with volume tolerance and storage. Manifested loads list what is in them; unmanifested loads do not, and the discount reflects that.

How it differs from government surplus: condition disclosure is generally worse and the "customer returns" label covers everything from unopened to destroyed. Government sellers describe condition inconsistently but they are not trying to move damaged stock, which changes the risk profile.

Worth knowing: B-Stock runs official, retailer-branded liquidation marketplaces, including Walmart's and Costco's, which makes it the closest thing to an aggregator layer here. Direct Liquidation now operates under ReturnPro after a 2025 relaunch, so older write-ups describe it under a different owner.

Check the date on any list you read. This category churns faster than the others. BULQ, which appeared on essentially every "best liquidation sites" list for a decade, was shut down by Optoro in July 2025. Guides recommending it have not been updated, which is a reasonable signal about how carefully the rest of the list was checked.

Industrial, plant and bankruptcy auctions

Where to look: BidSpotter, Proxibid, HiBid

Manufacturing equipment, laboratory kit, restaurant fit-outs and whole-facility clearances, often triggered by a closure, insolvency or relocation. Lots run from a single lathe to an entire plant.

Who it suits: trade buyers and specialist dealers more than general resellers. Values are high, buyers are few, and knowing what a machine is worth is most of the skill.

How it differs from government surplus: the closest neighbour on this page. Government agencies sell a lot of the same categories, and a buyer sourcing shop equipment should genuinely check both. The difference is that government sales are recurring and predictable while bankruptcy sales are one-off events you have to catch.

Worth knowing: these are auctioneer networks rather than category aggregators, which means coverage depends entirely on which auction houses publish to them, with specialist machinery platforms alongside them. Before you treat them as independent alternatives: BidSpotter and Proxibid share a parent in Auction Technology Group, so checking both is less of a second opinion than it appears.

Fleet, heavy equipment and agricultural

Where to look: Ritchie Bros, IronPlanet, Machinery Trader

Trucks, excavators, loaders, tractors and trailers. The one category on this page where we already overlap substantially, because government fleet disposal is a major source of exactly these machines.

Who it suits: contractors, farmers and equipment dealers. Also the category where transport cost most often decides whether a deal is a deal.

How it differs from government surplus: it does not, much. If you are buying heavy equipment you should be searching government sources and commercial ones together. Our equipment auctions near me page covers the government half.

Worth knowing: Ritchie Bros and IronPlanet are the dominant commercial players, and have been the same company since Ritchie Bros acquired IronPlanet in 2017, with the parent now trading as RB Global. Machinery Trader and the auctioneer networks carry the rest.

Four companies own most of the names on this page

The single most useful thing to know about this landscape is that it has far fewer players than domains. Most of the sites above roll up into four holding companies:

This matters practically, because "shop around across a few sites" assumes the sites are independent and often they are not. Checking BidSpotter and then Proxibid is one company twice. AllSurplus is a centralized storefront pulling from across the Liquidity Services network, so a lot you saw on GovDeals will frequently reappear there rather than being a second, separate listing.

The exception worth knowing is that shared ownership does not always mean shared inventory. GovLiquidation sits under the same parent as GovDeals but runs a distinct Department of Defense surplus and scrap contract, so it carries military inventory GovDeals does not. Common parent, genuinely different catalogue.

The practical rule: before concluding an item is not available anywhere, check whether the sites you compared were actually separate catalogues. This is also why de-duplication is the quality bar to hold an aggregator to. An index that counts the same lot once per brand produces a bigger headline number and a worse product.

Where the boundaries actually fall

Two practical rules come out of the map above.

Match the category to what you can price. Every category here rewards the same skill, knowing an item's resale value before you bid, but they differ in whether that skill is usable. Government surplus and estate auctions catalogue individually, so you can price. Storage units and unmanifested pallets do not, so you are buying a distribution rather than an item. Neither is better, but they are different games and the second one punishes anyone who thinks they are playing the first.

Transport decides more deals than price does. Nearly everything on this page is pickup-only. A lot two states away at half the price is usually the worse buy once you have paid freight. This is why distance filtering matters more than it sounds, and it is the filter most platforms handle worst.

What we cover, plainly

We index government surplus only: federal, state, county and municipal sales across four countries, free to search, with item-level sold-price comps and a Flip Score on strong lots backed by 155,000+ past US government auction sales.

We do not index storage units, estate sales, retail liquidation or commercial equipment dealers. If that is what you are after, the sections above point at the right layer. If you want the government half, start with the feed.

Frequently Asked Questions

What is an auction aggregator?

A search site that indexes listings from many auction marketplaces into one place, so you search once instead of checking each platform separately, then click through to the original marketplace to bid. It does not run auctions itself and a good one is free to search. The distinction that matters is aggregator versus marketplace: the marketplace runs the sale and charges the buyer's premium, the aggregator only helps you find it.

Is there one aggregator that covers every kind of auction?

No, and treat any site claiming to be one with suspicion. The categories are structurally separate: storage units, estate sales, retail liquidation, industrial plant and government surplus each have different sellers, different legal frameworks and different listing formats. Every working aggregator specialises in one of them. A site claiming to cover all of them is usually either a thin directory of links or a paid subscription reselling access to free public listings.

What is the difference between government surplus and liquidation auctions?

The seller and the reason. Government surplus is a public agency disposing of assets it no longer needs, mostly used: fleet vehicles, IT equipment, office furniture, seized goods. Liquidation is retail inventory that never sold or came back as a return, sold by pallet or truckload. Government lots are usually described individually and sold to clear an asset register; liquidation loads are sold in bulk and may be unmanifested. Both suit resellers, but the risk profiles are different.

Are storage unit auctions worth it for beginners?

They are the highest-variance category on this page and the hardest place to start. You bid on a unit's contents sight-unseen beyond a doorway view, you take everything including what is worthless, and you usually have 24 to 72 hours to clear it. There is no way to check comparable sold prices before bidding because you do not know what is in there. Categories where lots are catalogued individually let you learn pricing before you take on that variance.

Do you list estate sales or storage auctions?

No. We index government auctions only: federal, state, county and municipal surplus across the US, UK, Canada and Australia. Estate sales, storage units, retail liquidation and commercial equipment sit outside that scope, and the sections above point at the platforms that cover each.

Why do different auction sites show the same listings?

Because ownership is far more concentrated than the number of domains suggests, and one operator often runs several consumer-facing brands over overlapping inventory. Four companies account for most of the well-known names: Liquidity Services (GovDeals, AllSurplus, GovLiquidation, Liquidation.com, Machinio), Auction Technology Group (BidSpotter, Proxibid), Sandhills Global (HiBid, Machinery Trader) and RB Global (Ritchie Bros, IronPlanet). AllSurplus in particular is a centralized storefront drawing from across the Liquidity Services network, so lots surface there and on GovDeals both. Shared ownership is not always shared inventory though: GovLiquidation runs a separate Department of Defense surplus contract and carries military lots GovDeals does not. Aggregators that de-duplicate collapse genuine repeats into one result; ones that do not show you the same lot several times and count each toward a headline listing total.

Which auction category has the best resale margins?

There is no category-level answer, which is why the question is a trap. Margin comes from an information advantage on a specific lot, not from the category it sits in, and every category has both underbid and overbid lots at the same time. The more useful question is which category lets you check what comparable items actually sold for before you bid, because that is where the advantage comes from. Government surplus and catalogued estate auctions allow it. Sealed storage units and unmanifested pallets do not.