Betting loyal to one sportsbook might feel easier but could cost you more than...

https://wiki-tonic.win/index.php/What_Does_%22Loyalty_Tax%22_Mean_in_Sports_Betting%3F

Betting loyal to one sportsbook might feel easier but could cost you more than you think. For example, sticking with a -110 line instead of shopping around for -105 means you’re giving up about 4.5% in value every bet