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Show HN: BidWix – one-shot price agreement using secret max/min
Hi HN — I built BidWix, a small negotiation tool for agreeing on a price without haggling.
How it works:
- The buyer enters their true maximum price (kept secret from the seller).
- The seller enters their true minimum price (kept secret from the buyer).
- If there is overlap, BidWix suggests a single “fair” price using the geometric mean (so the compromise is symmetric in percentage terms, not absolute currency units).
Notes:
- No signup. Email is optional. No ads.
- BidWix stops at the price suggestion. It does not handle payment, contracts, escrow, or delivery.
- It’s meant for cases where both sides want to make a deal, but don’t want the “you go first” dance.
- I’m not a skilled negotiator myself, so I wanted a tool where negotiation skill is less of an advantage.
- It seems to work especially well for intangible goods (I’m a sound designer).
If you try it, I’d value feedback on:
- Where the flow feels confusing or too wordy.
- Whether the suggested price feels reasonable in real negotiations you’ve had.
- Any edge cases or incentive problems you see.
Optional background (rationale + math): https://bidwix.com/articles/why-geometric-mean-feels-fair https://bidwix.com/articles/why-geometric-mean-feels-fair
A great day to all of you!
Stéphane (the guy who built myNoise)