It is the least interesting advice in betting and the only edge available to everyone. Here is what it is actually worth, in dollars.
Ask any betting community how to improve and somebody will tell you to line shop. It is repetitive, unglamorous advice that people skim past on the way to the picks, and it is worth more than almost anything else in the thread.
The reason it gets ignored is that nobody puts a number on it. So here is the number.
On this page
What it is worth
Take the simplest possible version. Same game, same side, one book has it at -110 and another at -105.
At -110 you risk $110 to win $100. At -105 you risk $105 to win the same $100. If the two sides of the bet are genuinely even, the standard price costs you about 4.55 percent of everything you stake over time. The better price costs about 2.38 percent.
Taking the better number saves 2.16 percent of stake, on every single bet. You did not have to be right about anything.
| Turnover | Cost at -110 | Cost at -105 | Difference |
|---|---|---|---|
| $5,000 | $227 | $119 | $108 |
| $10,000 | $455 | $238 | $216 |
| $25,000 | $1,136 | $595 | $541 |
| $50,000 | $2,273 | $1,190 | $1,082 |
Somebody putting $25,000 through a sportsbook over a season, which is $480 a week, keeps an extra $541 for doing nothing but checking a second screen.
The number that reframes everything
Here is the version that should change how you think about this.
At -110 you need to win 52.38 percent of your bets to break even. At -105 you need 51.22 percent.
So a bettor who picks winners at 52 percent is losing money at the standard price and making money at the better one. Same bets. Same judgement. Same person. The only variable is where the bet was placed.
That is the whole argument. Most people trying to improve are trying to move their win rate, which is hard and slow. Moving your average price is easy and immediate.
Half points are worth more than juice
Everything above is about price. The bigger prize is usually the number itself.
Getting +3.5 instead of +3 in an NFL game, or -2.5 instead of -3, matters disproportionately, because three is the most common margin of victory in the sport. A half point either side of it converts a meaningful share of pushes and losses into wins. The same applies around seven, and to a lesser extent around ten.
Books do not move in lockstep. Our own testing found one operator opening an NFL game at -2.5 while most of the market opened at -3, documented in the Bookmaker review. Anyone who checked more than one screen that morning got a materially better bet than anyone who did not.
How to actually do it
- Open accounts before you need them. Three is enough to start. Doing this after you have been restricted somewhere is much harder.
- Pick books that differ. Two books that copy the same source give you one number. Pair a book that posts early with one that moves later. Our guide to sharp versus square books explains why that combination covers more ground.
- Check before every bet, not occasionally. The edge is per-bet and it only accrues if you take it every time.
- Fund them all. A better number you cannot bet into is not a better number.
- Compare the number first, then the price. Half a point on a key total or spread usually beats two cents of juice.
- Take the number when you see it. Waiting for it to improve is a different bet from the one you were making.
The one real cost
We should be straight about the downside, because most pages recommending this skip it.
Multiple accounts means multiple balances, which means more money sitting with offshore operators than you strictly need. That is the actual risk in this market, and it is commercial rather than legal, as we set out in is offshore betting safe.
The practical answer is to keep each balance modest and withdraw regularly rather than letting funds accumulate across four books. Our payout speed rankings cover which operators make that easy, and our sportsbook rankings cover which are worth having open.
Questions people ask
What is line shopping in sports betting?
Checking several sportsbooks and placing your bet wherever the number or the price is best. It requires no prediction and applies to every bet you make, which is why it is the most reliable edge available to a recreational bettor.
How much does line shopping actually save?
Taking -105 instead of -110 saves about 2.16 percent of stake on every bet. Across $25,000 of turnover that is roughly $541. The saving applies whether you win or lose the individual bet.
How many sportsbook accounts do I need?
Three is a reasonable starting point, provided they differ from each other. Two books that follow the same market give you effectively one number. Pairing a book that posts lines early with one that moves later covers more ground.
Is a half point worth more than better juice?
Usually yes, particularly around key numbers. Three is the most common margin in NFL, so moving from +3 to +3.5 converts a share of pushes and narrow losses into wins, which typically outweighs a two cent improvement in price.
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