Seller Agreement

This agreement binds every user who opens a listing, starts an auction, or matches a buy order on Sigmamarkt as a seller. It applies together with the Terms of Service.

Sigmamarkt commission is deducted from the seller. The buyer pays the list price; the seller's gross revenue is the list price; net payout = list price − commission. The payment processor fee is absorbed by Sigmamarkt out of commission (no additional 'processing fee' is added to the buyer, and the seller is not charged separately).

• Account sale: 10%
• In-game currency (coin) sale: 5%
• Item sale: 10%
• Private / referred listing: 7%

Commission rates are read from commission_rules and are always shown explicitly at checkout and in the seller summary. Within a category the rate is fixed; there are NO tier- or volume-based individual discounts (Constitution F3).

As a buffer against chargebacks and late disputes, a portion of seller earnings is held in a rolling reserve:

• New seller (Trust Tier 0): 10% of earnings held for 7 days.
• Trust Tier 1 (Active): reserve percentage drops and the hold shortens (the current value is read from the trust_tier configuration; the seller dashboard shows the live number).
• Trust Tier 2-3: reserve drops to the minimum.
• Trust Tier 4 (Power Merchant): subject to manual review and negotiation.

Amounts whose reserve period has elapsed are moved to the withdrawable balance automatically every day.

Sigmamarkt applies the following KYC tiers. When a threshold is crossed payouts are automatically held; the seller has 72 hours to complete the required step.

• Tier 0 — Registration: email + phone verification.
• Tier 1 — DSA compliance: name + address self-declaration on first sale attempt.
• Tier 2 — Stripe Identity: identity document + selfie when cumulative sales > $500 OR a single transaction > $200.
• Tier 3 — Enhanced Due Diligence (EDD): Tier 2 + source-of-funds declaration + bank account verification when cumulative monthly sales > $5,000 OR single transaction > $1,000.
• Tier 4 — Power Merchant: full KYB (if a company) and ongoing transaction monitoring at monthly volume > $10,000.

If a KYC threshold is crossed the in-flight transaction COMPLETES; it is not suspended. However the payout enters the queue with a KYC_PENDING flag and if not cleared within 72 hours the payout sits in reserve and the listing stops accepting new sales.

Separate from KYC, on the reputation axis:

• Tier 0 — New: sales open, low limit, 10% + 7-day reserve.
• Tier 1 — Active: first N successful orders + low dispute rate, limits raised, reserve shortened.
• Tier 2 — Verified: after Stripe Identity KYC, the 'Verified Seller' badge and faster settlement.
• Tier 3 — Trusted: high volume + low chargeback, reserve at minimum, 72-hour review window, priority support.
• Tier 4 — Power / Merchant: manual review + high volume, commission discount, bulk tooling, Power Merchant API access.

• Changing the recovery email to a Sigmamarkt-managed temporary alias.
• Rotating the password (the new password is not shown to the seller; it is held in the vault).
• Resetting 2FA and enrolling Sigmamarkt-managed 2FA.
• Accessing the account contents (rank, region, level, item list, etc.) for automated scanning.
• Performing a token-only login when a buyer triggers Check Accessibility.
• Granting human moderator access during a dispute investigation if required.

This authorisation applies only while the listing is ACTIVE. When the listing closes, ends unsold, or is withdrawn by the seller, the account is returned to the seller via Reverse Hand-off: a new password is delivered to the seller, the recovery email is restored to the seller's preferred address, 2FA is handed back, and credentials on Sigmamarkt servers are deleted.

Vault security: credentials are stored under envelope encryption + KMS; plain-text passwords are never written to logs, error messages, or backup layers.

If a buyer files a chargeback through their card issuer / bank without first opening a Sigmamarkt dispute, or if a chargeback results in the seller being found at fault, the loss is offset in this order:

• 1) Against the seller's withdrawable balance.
• 2) Against the seller's rolling reserve.
• 3) If still open: the seller is suspended; the remainder is written as a negative entry in audit_log + ledger and is offset against future earnings.

In friendly-fraud cases (the buyer keeps the product/account but claims 'unauthorised') and in late chargebacks (where the rolling reserve has already cleared), the platform absorbs the loss; this is a consciously accepted policy risk.

• Double listing: an account/coin/item live on Sigmamarkt may not be listed for sale on another marketplace (G2G, PlayerAuctions, etc.) at the same time. When you publish, the account is in Sigmamarkt custody and is technically not deliverable elsewhere.
• Fake attributes: presenting a rank, item, or skin in the listing that the account does not actually have is prohibited.
• Banned / suspended / stolen accounts: an account that has been permanently or temporarily suspended by the publisher, stolen from another party, or obtained by fraud may not be listed.
• Misleading description: a description that does not accurately reflect the in-game state (e.g. 'clean account, never banned' when false) leads to listing removal and a trust-score reduction.
• Off-site steering: inviting the buyer to another platform in chat.

• Opening an auction requires Trust Tier 2 or above.
• Minimum auction value: $300.
• Weekly auction limit: Tier 0-1: 0, Tier 2: 1, Tier 3: 2, Tier 4: 5.
• Duration: 3, 5, or 7 days. Anti-snipe: a bid placed in the final 10 minutes extends the auction by 10 minutes; maximum 6 extensions.
• Hidden reserve and buy-now are optional; buy-now must always be above the hidden reserve and is removed as soon as the first qualifying bid arrives.
• Shill bidding (placing fake bids on your own auction) is prohibited. Accounts linked by identity, payment, or device may not bid on your auctions. If detected: auction cancelled + trust-tier collapse + suspension.
• An auction seller may cancel an auction only before the first bid arrives; cancellation after the first bid is not possible.

Sigmamarkt may freeze or suspend a seller account in the following circumstances:

• High dispute-loss rate or high chargeback rate.
• Detection of false listings, false evidence, or false KYC documents.
• Double listing or off-site transaction attempts.
• Detection of wash trading or shill bidding.
• A legal notice from a competent authority.
• Receipt of a publisher cease-and-desist.

Every suspension is given a concrete reason and is written to audit_log. The seller may appeal the decision through the dispute channel; the appeal review is itself transparently reasoned.

Sigmamarkt does not track and is not responsible for the seller's local tax obligations. The seller is responsible for income tax, VAT, digital service tax, and similar obligations in their own jurisdiction. For high-volume sellers (above the [TBD] threshold), Sigmamarkt may have an information/reporting duty in certain jurisdictions (e.g. EU DAC7); in such cases the seller will be notified in advance.