Condition 1: You Want a Fair Outcome

The first condition is the most fundamental. BidWix is built for two parties who want an outcome that satisfies both of them equally, not a deal where one side walks away feeling they won and the other quietly suspects they lost.

This might sound obvious. In practice, it rules out a surprising number of negotiations. Many people enter a deal hoping to gain the upper hand. They want the best possible price for themselves, and they measure success by how far they pushed the other person. BidWix is simply not designed for that. If that's your goal, you'll be better served by traditional haggling, and the better bluffer will win, as usual.

But if what you want is a fair outcome, one where both parties feel the result was honest, proportional, and respectable, then BidWix is built exactly for you. And there is a particular situation where this matters enormously: when the two parties expect to work together again. A traditional negotiation leaves a residue. Someone always wonders if they could have done better. A BidWix deal leaves something different behind: the knowledge that the outcome was fair by construction, not by chance. That's a much healthier foundation for a lasting business relationship.

Condition 2: One Shot, No Revisions

Both parties must be willing to settle the deal in a single round, with no counter-offers, no revisions, no drawn-out back-and-forth.

This is, for many people, a genuine relief. Negotiation takes time and energy. It requires patience and a tolerance for discomfort that not everyone has. BidWix replaces all of that with one honest moment: each party submits their number, and the result is calculated immediately.

But the single round is more than a convenience. It is the condition that makes honesty the better strategy, not because both parties are trustworthy by nature, but because the structure leaves less room to be anything else.

You can't see the other party's number. You can't revise yours. In that situation, submitting your true limit is simply the move that gives you the best possible outcome, assuming you need a deal.

The single round doesn't require trust. It somehow manufactures it. Most people aren't dishonest by nature: they pad their numbers because they assume the other party is doing the same. Remove the possibility of revision, and now they are facing the risk of walking away with nothing.

Condition 3: The Uncomfortable Number

This is the condition that makes everything else work, and the one that requires the most honesty.

BidWix asks each party for their true limit. For the seller, that means the absolute minimum price you would accept. Not the minimum that makes you comfortable. Not the minimum that still feels like a good deal. The naked minimum, the one that makes you really uncomfortable. Below it, there is no deal. That is your number.

For the buyer, the same logic applies in reverse. Your maximum is not the price you'd happily pay. It's the absolute ceiling, the limit that you could just barely justify. Above it, you walk away.

These are hard numbers to say out loud. They feel exposing. But you won't be saying them out loud: you'll be submitting them privately to BidWix, which acts as a trusted middleman. The other party never sees your number. What matters is that you are honest with yourself, and with the process.

Here is why it matters so much. The geometric mean, the mechanism BidWix uses to find the result, is designed to split the gain proportionally between the two limits. When both parties submit their true limits, both receive equal relief from the price that hurt them. The seller gets more than their minimum. The buyer pays less than their maximum. And crucially, both moved by the same ratio. That is what fairness looks like when it's built into the math.

A Deal at the Boundary

Sometimes the seller's minimum and the buyer's maximum are very close to each other. The overlap is narrow. The geometric mean lands near both limits simultaneously, which means both parties end up close to their price-that-hurts.

This might feel like a bad outcome. But you can see it the other way round: it means both parties were at maximum stretch, and the deal still happened. Both are in exactly the same situation. The discomfort is shared equally, which is, again, what fairness looks like.

Why Bluffing Backfires Here

Some people will be tempted to pad their number. The seller submits a minimum slightly higher than their true limit, thinking it gives them safety. The buyer submits a maximum slightly lower, for the same reason. What it actually does is minimize the chances of reaching a deal.

If a party was already working close to the other party's true stretch, adding a padding pushes their submitted number past that limit entirely. The result: no deal. Not a slightly worse deal, no deal at all. The party that pads risks ruining the outcome for both.

And when no deal is declared, it should be treated as final.

Treat "No Deal" As Final

Remember condition two? One round; that's it!

This is perhaps the most important practical rule in using BidWix well. When the tool declares no deal, the assumption is that both parties played honestly. The limits genuinely didn't overlap. There is nothing more to negotiate.

If one party comes back and suggests trying again, submitting new numbers, they are implicitly admitting that they didn't play fair the first time. The only reason to try again is if someone held back.

Re-negotiating after a no-deal undermines your credibility in future uses of the tool. The entire value of BidWix rests on the assumption that both parties commit fully, once. The moment that assumption breaks, the mechanism loses its power.

I can't enforce this as a rule: BidWix is an open tool, and anyone is free to use it as they wish. But I can tell you that the optimal outcome, the one the tool was designed to produce, is only achievable when both parties treat their submission as final. One shot. No revision. It is what makes the whole thing work.

The one-shot commitment is not just good advice: it can be analyzed formally to be the optimal strategy under Nash equilibrium. This will be the subject of a future article.

So, Are You Ready for BidWix?

Before using BidWix for a deal, it's worth asking three questions. Do both parties want an outcome that is fair to each other, not just favorable to themselves? Are both willing to commit in one round, without revision? And is each party ready to submit their true limit, the number that might feel uncomfortable, not the number that feels safe?

If the answer to all three is yes, BidWix will do the rest. The math is sound. The process is honest. And the result will be something that traditional negotiation rarely produces: a deal where both sides walk away feeling they were treated fairly.

Stéphane