I'm confused on the lines for soccer. There is a spread option, one at pk with one set of odds, and then another spread option that says pk, +/- 1/2 at a different set of odds.
What's the difference? Does one get your money back if there is a draw and the other is a loser if it's a draw?
12751 Czech Republic pk, -½ -106
12752 Greece pk, +½ -110