Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Robinhood Prediction Markets) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Go to the live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Go to the live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Go to the live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Go to the live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Go to the live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| O/U 2.5 | 100% |
| O/U 3.5 | 100% |
| Both Teams to Score | 100% |
| CF Estrela da Amadora O/U 0.5 | 100% |
| CF Estrela da Amadora O/U 1.5 | 100% |
| Sporting CP O/U 0.5 | 100% |
| Sporting CP O/U 1.5 | 100% |
| Both Teams to Score in Second Half | 100% |
| 2nd Half O/U 0.5 | 100% |
| 2nd Half O/U 1.5 | 100% |
| 2nd Half O/U 2.5 | 100% |
| CF Estrela da Amadora 2nd Half O/U 0.5 | 100% |
| CF Estrela da Amadora 2nd Half O/U 1.5 | 100% |
| Sporting CP 2nd Half O/U 0.5 | 100% |
| Sporting CP 2nd Half O/U 1.5 | 100% |
| CF Estrela da Amadora (-1.5) | 0% |
| Sporting CP (-1.5) | 0% |
| CF Estrela da Amadora (-2.5) | 0% |
| Sporting CP (-2.5) | 0% |
| O/U 4.5 | 0% |
| O/U 5.5 | 0% |
| Both Teams to Score in First Half | 0% |
| 1st Half O/U 0.5 | 0% |
| 1st Half O/U 1.5 | 0% |
| 1st Half O/U 2.5 | 0% |
| CF Estrela da Amadora O/U 2.5 | 0% |
| Sporting CP O/U 2.5 | 0% |
| CF Estrela da Amadora 1st Half O/U 0.5 | 0% |
| CF Estrela da Amadora 1st Half O/U 1.5 | 0% |
| Sporting CP 1st Half O/U 0.5 | 0% |
| Sporting CP 1st Half O/U 1.5 | 0% |
Market context
CF Estrela da Amadora host Sporting CP in a Primeira Liga match, with the market’s **0% YES** line implying the contract is already pricing the specified “more markets” outcome as effectively dead or no longer attainable before the 19:30 UTC settlement cut-off. That sits alongside mainstream pre-match pricing that has Sporting as a clear away favourite: Kalshi shows Sporting at 79¢, the draw at 15¢ and Estrela at 7¢, while bookmaker screens cluster Sporting around decimal 1.21-1.34, which translates to roughly 74-83% before vig and fees.[17][15][2]
For comparison, the historical read is that this fixture has usually been treated as a lopsided away-win spot rather than a coin flip. Current odds comparison pages show wide dispersion only around the margins, not the match outcome itself: one screen lists Sporting at 1.21, draw at 6.2 and Estrela at 11.76, while another shows Sporting at 1.25, draw at 6.00 and Estrela at 10.50.[2][8] That matters when comparing platforms: Kalshi quotes probabilities directly, whereas Polymarket-style and sportsbook-style venues tend to be read through decimal odds or implied probability, with Betfair/Smarkets also layering in commission and account access differences that can change the effective price for the same side.[13][4]
Traders should watch the confirmed line-ups, any late injury or rotation news, and whether the market being traded is tied to a specific statistical threshold rather than the match result itself. Odds pages indicate this game was already live on multiple books close to kick-off, so any movement is more likely to come from team news, red-card risk, or settlement-rule clarification than from broad market repricing.[3][5] KYC reach also matters: Kalshi is broadly US-facing, while Betfair and Smarkets are UK/European options with different verification and commission structures, so the same 79% chance can imply different tradable value once fees and access are factored in.[17][13][4]
Methodology
We read CF Estrela da Amadora vs. Sporting CP - More Markets from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.
Resolution & payout
Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.
FAQ
- What does Polymarket cost vs Kalshi?
- Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.
- Which platform has the deepest liquidity?
- Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.
- What about Smarkets as an alternative?
- Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.
- Are all these platforms regulated?
- No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.
- Which platform supports Klarna/SOFORT?
- Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.
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