1. FC Cologne vs. Real Sociedad San Sebastian - More Markets

Platform comparison

Market context

1. FC Köln and Real Sociedad are playing a club friendly, and the market is effectively pricing a near-certainty that the listed “more markets” set will be published and settle normally. That aligns with the broader pre-match view of the fixture itself: external models and sportsbook-style previews split on the result but still treat the game as a fairly open pre-season test, with Real Sociedad only a narrow favourite rather than a dominant one.[1][3][4][14]

For comparison, Polymarket’s trader consensus has been closer to a balanced match-up, while Kalshi’s market page showed Köln heavily favoured at 99¢, highlighting how platform conventions matter more than the raw football read in these side markets.[1][2][5] On Kalshi, prices are quoted in cents rather than decimal odds, so a 99¢ line implies a 99% market price before fees; by contrast, bookmakers such as Smarkets, Betfair, or conventional odds feeds usually show a lower-implied-probability price after accounting for their own margin and exchange commission. The same underlying event can therefore look materially different depending on whether the platform is showing gross probability, tradable price, or an odds format that already embeds costs.[2][5][9]

The main catalysts are administrative rather than sporting: final confirmation that the match goes ahead as scheduled, whether there is any venue, timing, or squad news, and whether the market is tied to the full 90 minutes or to a narrower “more markets” contract set. Kalshi’s rules note that if a game is cancelled or moved more than 48 hours away, it can resolve to fair value, so schedule changes matter more than a marginal team-news update in a friendly of this type.[2] Polymarket also notes at least one Sociedad injury absence, but treats it as a minor factor rather than a market-moving development.[1]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares 1. FC Cologne vs. Real Sociedad San Sebastian - More Markets specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Robinhood Prediction Markets, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

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.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

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.

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.