Odds are a price, not a prediction. They carry the probability the operator has estimated plus its own margin, and comparing that price across sites changes your return more than any tip does: the same outcome is rarely quoted the same everywhere, and on a busy evening the gap between the best and the worst price on a single market is often larger than any edge a selection could give you.
Fractions, decimals and what the margin hides
UK sites show fractions by default. 6/4 means four units staked returns six in profit plus the stake — the same price as 2.50 in decimals, which most sites let you switch to in the settings. Decimals are easier to compare, which is exactly why they are worth turning on.
What the display never shows is the margin. Add up the implied probabilities of every outcome in a market and the total is always above 100%: the excess is the operator’s cut. On a Premier League match it is typically 4-6% on the three-way result, and considerably more on markets like correct score or first goalscorer. A market with few outcomes and heavy competition is priced tighter than an exotic one, which is the plainest argument for staying near the main markets.
How to read a price that is moving
A price that shortens means money has gone on that outcome, or that information has arrived: team news, a withdrawal, a pitch report. A price that drifts means the opposite. Neither movement tells you who will win — it tells you how the market has changed its mind, which is only useful if you formed a view before you looked.
Three practical notes. Prices move fastest in the hour before kick-off, when the confirmed line-ups arrive. During play the market is suspended at every significant event and reopens repriced, so the number you saw a moment ago may not be the number you get; most sites ask you to accept the new price rather than settling at the old one. And in-play prices carry a wider margin than pre-match ones, because the operator is pricing under time pressure.
Where to find the week’s prices
The main markets of the week, competition by competition, are in weekly betting odds. For a single match, open the same market on two or three of the accounts compared in online bookmakers and take the best number — that habit is worth more over a season than any system.
In-play
How in-play betting works, including cash out and the suspension rules, is in live betting. The operators with the deepest in-play market lists are compared in live bookmakers, and the streaming attached to a funded account is in live streaming TV.
What the markets mean
If a market name is unfamiliar, each one is explained separately: the full list is in type of bets, and the questions we are asked most about prices and settlement are in the betting FAQ.