FAQ
Is SETH worth real money?
No. SETH is Sepolia testnet ETH — a test asset with no monetary value. It’s useful for testing and development, and SellPolia makes it liquid, but it isn’t an investment. Nothing here is financial advice.
How do I get paid as a seller, and in what?
In real ETH on Base — not in SETH. As your SETH sells you accrue a USD-owed balance (priced at your tier); once your sold balance reaches 10 SETH you’re included in the next daily payout batch. See Payouts.
Why isn’t my deposit in the queue yet?
The backend queues a deposit only after it detects and confirms the on-chain
SethReceived event. That usually takes a short scan cycle after your Sepolia
transaction confirms. Deposits below the 1 SETH minimum, or from a contract
(non-EOA) account, are rejected outright.
Can my payout address differ from my selling address?
Yes. Set a separate Base payout address from the account panel — it sends a small Sepolia transaction to the vault, and the latest on-chain change wins. If you never set one, payouts go to your selling address.
How is the price set? Do sellers and buyers pay the same?
Buyers pay a single USD buy price per SETH, set on-chain (owner-editable, the
same for everyone). Sellers earn a percentage of that price based on their
volume tier — from 20% (Novice) up to 100%
(Apex). Always read the live buy price from
/api/market.
What can I pay with when buying?
The payment chain’s native coin (e.g. ETH on Base) or a stablecoin (USDC, USDT, DAI). Native payments are priced via Chainlink; stablecoins are valued at $1. See Networks & Tokens.
Which chains are supported?
Selling and delivery are on Sepolia; payouts are on Base. For buying,
Base is live; Ethereum, Optimism, Arbitrum, and BNB Chain are planned. The
active buy chains are whatever /api/market
returns.
What happens if the queue is empty when I buy?
Your buy is filled from the SellPolia reserve — an owner-funded backstop
inside the vault — so purchases don’t fail for lack of inventory. Reserve fills
are recorded separately (house_fill) and never take payouts from real sellers.
Is the delivery of bought SETH instant?
Nearly, but not atomic. After your payment is indexed, a worker delivers the SETH
to your Sepolia address in a separate transaction. Track it in the Orders tab
or via /api/buyers/:address/orders.
Do I need to trust an off-chain order book?
No. There’s no off-chain order submission — every deposit, purchase, delivery, and payout is an on-chain event. The backend only indexes the chain and drives deliveries/payouts; the contracts hold the funds.