Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Goiás EC (-1.5) | 100% |
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| 1st Half O/U 0.5 | 100% |
| Goiás EC O/U 0.5 | 100% |
| Goiás EC 1st Half O/U 0.5 | 100% |
| 2nd Half O/U 0.5 | 100% |
| Goiás EC 2nd Half O/U 0.5 | 100% |
| Goiás EC O/U 1.5 | 99% |
| Goiás EC O/U 2.5 | 1% |
| Ceará SC O/U 0.5 | 1% |
| Ceará SC O/U 1.5 | 1% |
| Ceará SC O/U 2.5 | 1% |
| Ceará SC (-1.5) | 0% |
| Goiás EC (-2.5) | 0% |
| Ceará SC (-2.5) | 0% |
| O/U 2.5 | 0% |
| O/U 3.5 | 0% |
| O/U 4.5 | 0% |
| O/U 5.5 | 0% |
| Both Teams to Score | 0% |
| Both Teams to Score in First Half | 0% |
| 1st Half O/U 1.5 | 0% |
| 1st Half O/U 2.5 | 0% |
| Goiás EC 1st Half O/U 1.5 | 0% |
| Ceará SC 1st Half O/U 0.5 | 0% |
| Ceará SC 1st Half O/U 1.5 | 0% |
| Both Teams to Score in Second Half | 0% |
| 2nd Half O/U 1.5 | 0% |
| 2nd Half O/U 2.5 | 0% |
| Goiás EC 2nd Half O/U 1.5 | 0% |
| Ceará SC 2nd Half O/U 0.5 | 0% |
| Ceará SC 2nd Half O/U 1.5 | 0% |
Market context
The Brazil Serie B match between Goiás EC and Ceará SC is scheduled for 7:00 PM ET on 4 July at Estádio da Serrinha in Goiânia, with the crowd-implied probability for this contract sitting at a definitive 100% YES on Polymarket today. This on-chain certainty reflects the conditional tokens locked on the Polygon network, where USDC liquidity has fully backed the outcome, bypassing abstract event speculation to focus purely on the settled market mechanics.
Historically, Goiás and Ceará have met 12 times, with Goiás winning five matches, Ceará securing two, and five ending in draws, suggesting a competitive but not overwhelmingly dominant pattern for either side [1]. In these encounters, Goiás scored 14 goals while Ceará scored 13, indicating tight goal margins that often lead to draws or narrow victories rather than runaway scores [1]. The current 100% probability is unusual given this head-to-head volatility, implying the market has resolved a specific dependency, such as a confirmed fixture cancellation or a pre-match administrative ruling that guarantees the outcome.
Traders should monitor official Brasileirão Série B announcements for any late schedule changes or team withdrawals, as these dependencies directly trigger the conditional token settlement [4]. Recent match data shows Goiás with 65% ball possession and six total shots against Ceará’s three, highlighting a tactical disparity that could influence in-play markets if the fixture proceeds [2]. No external news source currently contradicts the 100% settlement, but the absence of big chances in prior stats (zero for both sides) suggests the market may be pricing a low-scoring, draw-heavy outcome rather than a decisive win [2].
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
FAQ
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
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