Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
90% | 10% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
90% | 10% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| ↑ 1,900 | 90% |
| ↓ 1,800 | 79% |
| ↑ 2,000 | 62% |
| ↓ 1,700 | 45% |
| ↑ 2,100 | 40% |
| ↓ 1,600 | 27% |
| ↑ 2,200 | 23% |
| ↓ 1,500 | 15% |
| ↑ 2,300 | 12% |
| ↓ 1,400 | 10% |
| ↑ 2,400 | 7% |
| ↓ 1,300 | 5% |
| ↑ 2,500 | 4% |
| ↑ 2,600 | 2% |
| ↓ 1,200 | 2% |
| ↑ 3,000 | 1% |
| ↑ 2,700 | 1% |
| ↓ 1,100 | 1% |
| ↓ 1,000 | 1% |
| ↓ 900 | 1% |
Market context
Ethereum has not spent most of August trading anywhere near the prices implied by the upper brackets on this contract, so the **1% YES** on a high strike reads as a very thin tail rather than a mainstream view. On Polymarket, you are holding USDC on Polygon against conditional tokens that settle on whether ETH touches the specified level before the window closes, so the practical question is not where ETH finishes the month but whether it trades through the trigger at any point before 2026-09-01T04:00:00Z.
Recent price commentary frames ETH as trading around the high-$1,800s after failing to hold a July recovery trendline, with near-term support cited around $1,807 and $1,717, while a reclaim of $2,000 would be the first step towards higher resistance levels.[1] That sits comfortably below many August forecasts clustered in the low-to-mid $2,000s, which helps explain why the market prices the higher hit levels at low odds even before accounting for volatility.[2][3][11] For traders, the comparable case is a market that only needs one intramonth spike, so a low yes probability can still move sharply if spot reclaims momentum.
Catalysts worth watching are the usual ETH drivers rather than any single scheduled event: spot crypto sentiment, ETF flow headlines, and broader risk appetite can all pull price quickly through intermediate levels. Technical commentary also points to decision points around $1,807, $2,000 and $2,029, with downside reopening towards $1,717 and even $1,500 if support gives way.[1] In practice, the contract will react fastest to sudden upside breaks, because on-chain settlement through conditional tokens makes brief wicks just as relevant as sustained closes.
Methodology
We track What price will Ethereum hit in August? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
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.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- 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.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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