Fees & pricing
Understand the quote, the QTC fee and the price guardrail.
Fees, timeouts and confirmation counts on this page are read from the running platform configuration.
What does a trade cost?
The platform fee is 2% of the QTC amount, taken when the escrow releases: the buyer receives the amount minus the fee, and the fee itself is rounded down to the planck. Nothing is charged on the USDC side; the seller receives the full total.
The Quantus network fee of the lock is paid from the seller’s wallet, which is why the available balance is slightly below the on-chain balance. Release and refund network fees are paid by the escrow wallet.
Buyers pay Arbitrum gas for their USDC transfer. Offers that are never matched cost nothing.
How is the USDC total calculated?
Total = amount × price, rounded half-up to the cent. Prices move in steps of $0.01 per QTC. All math is done on integers (planck and USDC micro-units), so the figure in the trade room is the exact amount to send.
Why am I asked to confirm my price, or why was it rejected?
There is no oracle; users set prices. To catch typing mistakes, each new offer and each take is compared with a reference price: the volume-weighted average of the last 20 completed trades within 7 days, or the order-book mid when there are no recent trades.
More than 20% away from the reference, you must type a confirmation. More than 80% below or more than 400% above it, the order is rejected. With no reference at all (an empty market) the check does not apply.