eAuctions: how it works and what to require
Proconomy eAuctions provide configurable competitive events for categories where market tension is appropriate. Participation is restricted to suppliers that already satisfy qualification and risk criteria, the event is monitored live, intervention is limited to what policy permits, and the approved result moves directly into contract or purchasing workflows.
Where an auction wins. And where it costs you a supplier.
Auctions suit a narrow set of categories. Used outside it they damage relationships without moving price.
Good candidates
- Standard components with a stable specification
- Commodity raw materials with an index reference
- Logistics lanes and freight
- Packaging with defined tooling
- MRO consumables and fasteners
- Contract manufacturing with clear scope
Event formats
- Reverse auction on price
- Ranked auction where position is visible
- Lot-based events across plants or regions
- Multi-parameter events including lead time
- Sealed-then-live two-stage events
- Index-linked events for volatile commodities
Controls that keep it safe
- Qualification gate before invitation
- Reserve price and ceiling enforcement
- Decrement rules per lot
- Automatic extension on late bidding
- Award not automatic on lowest bid
- Supplier standing visible to the approver
Poor candidates
- Single qualified source
- Specification still moving
- High switching or re-qualification cost
- Categories where quality standing dominates
- Relationships under active development
- Anything where the saving is smaller than the disruption
Competitive tension. Inside supplier governance.
Seven controls that stop an auction creating a supply problem.
| Mechanism | What it has to do |
|---|---|
| Format selection per category | Reverse, ranked and lot-based events, with the format chosen against the category rather than applied uniformly. |
| Eligibility gate | Only suppliers meeting the qualification, risk and entity-approval position may be invited, so competitive tension never creates a supply-governance problem. |
| Lot structure matched to delivery | Lots defined by plant, region or delivery point so suppliers bid on landed cost rather than an ex-works price nobody actually pays. |
| Decrement and extension rules | Minimum decrements, soft-close extension and duration configured per event, with the rules visible to bidders before the event opens. |
| Live visibility for the host | Bid movement, supplier activity and lot position as it happens, with the ability to pause or extend under defined conditions. |
| No automatic award | The auction produces a ranked outcome. The award remains a human decision with supplier standing and total cost attached. |
| Complete bid history | Every bid, timestamp, extension and intervention retained — which is what makes an auction defensible if the award is later questioned. |
A description of what the practice requires, not a feature list.
Right instrument, wrong category. The sector view.
Where auctions belong, and where competitive tension has to come from earlier.
Building materials
Commodity categories with several regional suppliers, run as lot-based events on delivered cost per plant.
Industrial equipment
MRO and consumable frameworks where specification is stable and switching cost is low.
Automotive
Used selectively and late, after PPAP and capacity qualification, never as a substitute for supplier development.
Aerospace and defence
Rarely appropriate. Where the approved supplier list is narrow, competitive tension has to come from earlier in the programme.
Five questions. Starting with what not to auction.
A vendor with no answer to the first one is selling a hammer.
- Ask which of your categories they would advise against running as an auction. A vendor with no answer is selling a hammer.
- Show the eligibility gate. Can an unqualified supplier be invited by an administrator in a hurry?
- Run a lot-based event on delivered cost across two sites, not a single-lot price event.
- Confirm the award is not automatic on lowest bid, and show where supplier standing appears in the approval.
- Ask for the complete bid history export as an auditor would receive it.
Definitions. Asked and answered.
Categories with a clear specification, several capable suppliers and limited switching risk — commodities, standard components, packaging, logistics lanes and much MRO spend. Complex direct materials with engineering dependencies are usually better handled as a structured RFx.
Not without an authorised exception. Eligibility is enforced before invitation, and any exception is approved by a named person and retained on the event record.
No. The auction produces a market result; an authorised person makes the award decision against total cost, capacity, quality status and supplier suitability.
Only what the policy permits — for example extending a lot within the configured rules. Every intervention is recorded with the person who made it.
The approved outcome opens the next governed workflow: a contract draft where terms need to be agreed, or a purchasing workflow where an existing agreement already covers the buy.
A reverse auction is a live event in which pre-qualified suppliers compete to supply a defined requirement, submitting progressively lower prices against each other within a set period. The buyer publishes the specification and rules in advance; the competitive movement happens in real time.
An RFQ collects prices privately and compares them after the deadline. An eAuction runs the competition live, with suppliers responding to each other's positions. An RFQ suits most categories; an auction adds value only where specification is stable and several qualified suppliers genuinely want the volume.
They are when used on the wrong categories — where a supplier has invested in development, where switching cost is high, or where the specification is still moving. Used on standard, well-specified categories with several capable suppliers, they are a transparent mechanism that suppliers generally prefer to opaque negotiation.
A lot-based auction divides the requirement into separately awardable packages — by plant, region, delivery point or product family — so suppliers can bid where they are genuinely competitive. It typically produces a better total outcome than a single national lot, because it lets logistics reality into the pricing.