No — nothing is taken out of a sale. Whatever the deal is worth, what MarbleMap charges stays the same: no per-transaction commission, no percentage of the sale, no success fee, no cut of a closed deal.
Subscription is the only revenue source. Each side pays for the package it uses, and nothing is deducted from the trade itself. That is a deliberate choice made to protect sealed-bid fairness: a platform earning a percentage of every sale has an incentive to push the pricier offer, and we never built that incentive in. The automatic best-offer flag looks only at the terms of the offer, never at what we earn.
What the subscription means in practice: buyers start free, with 2 active demands at a time. Suppliers need a package — Starter, Growth or Scale — to see the market and submit offers. The core loop (open a demand, receive sealed offers, compare them) and sealed-bid fairness are identical on every package; what you pay sets your capacity, not the rules.
So opening a demand or accepting an offer adds no platform fee on top. The price is the price your supplier gave you.
Also asked as: Do you charge a per-transaction fee? · Do you take a percentage of the sale? · Is there a success fee on closed deals? · Does a bigger deal cost me more?