"Line shopping matters" is easy to agree with and easy to ignore. Numbers make it harder to ignore. Here is exactly how much better prices are worth over a season.
Example 1: spread bettor, 500 bets
A bettor places 500 spread bets of $100 and wins 52.5% of decided bets.
| Average price | Break-even | Profit over 500 bets |
|---|---|---|
| −110 | 52.38% | about +$110 |
| −107 | 51.69% | about +$780 |
| −105 | 51.22% | about +$1,250 |
Same picks, same win rate. Improving the average price by just five cents turns break-even into a real profit. That is the core of line shopping.
Example 2: underdog moneylines
A bettor bets 200 underdogs at a typical +150, $100 each, winning 41%.
- At +150: 82 wins × $150 − 118 losses × $100 = +$500
- At +160 (shopped): 82 × $160 − 118 × $100 = +$1,320
Ten cents on underdogs is worth more than ten cents on favorites, because you are paid more per win.
Example 3: player props
Props vary more between books than main lines. A typical prop might be −120 at one book and +100 at another for the same side.
- At −120 you need 54.5% to break even
- At +100 you need 50.0%
That is a 4.5-point swing in required win rate on a single bet, larger than nearly any bettor's handicapping edge. (Player prop line shopping.)
How much is a "cent" worth?
Near even money, each 1 cent of American odds is worth roughly 0.4–0.5% of return per bet for a bettor who wins about half the time. So:
- 5 cents better on average ≈ +2% ROI
- 10 cents better ≈ +4–5% ROI
- 20 cents better on props ≈ +8–10% ROI
For most bettors, that is more edge than all their analysis combined. (Sports betting ROI.)
The compounding effect with +EV
Line shopping alone improves every bet you would have made anyway. Combine it with a fair line and you can do something more: only bet when the best price beats fair. That flips line shopping from a cost saver into a profit source. (What is +EV betting?.)
Measuring your own line shopping
Track for every bet:
- The price you got
- The best price available at the time
- The fair line at bet time and at close
If your price is regularly the best available, and better than the closing fair line, you are capturing the value. OddsHype's bet tracking measures CLV on your tracked bets wherever a closing line is available, so you can see it without spreadsheets.
Frequently asked questions
How much does line shopping increase profit?
For typical bettors, line shopping adds about 2–4% ROI on main lines and more on props, which over hundreds of bets is often the difference between losing and winning.
Is 5 cents of juice a big deal?
Yes. Moving from −110 to −105 lowers your break-even win rate by more than a percentage point.
Do I need many sportsbooks to line shop?
Three or four books capture most of the benefit; more books add steady gains, especially on props.