Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
13% | 87% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
13% | 87% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Market context
GameStop has submitted a non-binding proposal to acquire eBay for approximately $55.5 billion, offering $125 per share in a 50% cash and 50% stock mix, with CEO Ryan Cohen prepared to bypass eBay’s board and appeal directly to shareholders if the offer is rejected[1][2]. The bid, which includes a commitment letter from TD Securities for up to $20 billion in debt financing, represents a 20% premium over eBay’s recent closing price and aims to transform the e-commerce platform into a stronger rival against Amazon[3][4].
Historically, such high-profile, non-binding takeover attempts by retail-focused firms rarely succeed without board cooperation or overwhelming shareholder pressure, as seen in past hostile bids that collapsed after regulatory scrutiny or financing gaps[5][7]. While GameStop holds a 5% stake in eBay and has secured significant debt backing, the crowd-implied 13% probability reflects the market’s scepticism regarding the feasibility of a $56 billion leveraged acquisition by a company with only $9.4 billion in liquid assets[2][3].
Traders should monitor eBay’s board response, any formal shareholder votes, and updates on sovereign wealth fund involvement, which The Wall Street Journal suggests Cohen may pursue to close the financing gap[1][3]. Key catalysts include official announcements from either company, regulatory filings, and shifts in GameStop’s stock price, which could signal investor confidence or hesitation in the deal’s execution[5][6]. With the settlement window ending in December 2026, the timeline allows for prolonged negotiation, but the current low probability suggests the market expects the proposal to remain unfulfilled.
Methodology
This page reads Will GameStop acquire eBay? on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
FAQ
- What are crypto prediction markets?
- Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- Can I use Bitcoin directly?
- No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.
- How volatile are crypto prediction markets?
- Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.
- Are crypto prediction markets taxable in the US?
- In the US, prediction market gains are typically treated as ordinary income or short-term capital gains depending on holding period. Consult a tax professional for your specific situation — we cannot provide tax advice.
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