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

https://100percentsurewins.com/top-5-free-real-time-odds-sites-to-check-before-you-bet/

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