Free odds sites help with line shopping by showing prices before you bet....

https://oscar-wiki.win/index.php/Free_Bet_Tracking_App_That_Also_Shows_Odds_Comparison

Free odds sites help with line shopping by showing prices before you bet. Compare the same market at each book, not just similar bets. Check the spread, total, or prop, then verify the odds, pick, and stake on your bet slip