I'm a recreational bettor who occassionally tries to understand mathmatical/+ev approaches to betting.
I know that many props and other small markets are beatable with little work. Today I noticed that this type of prop varries in price greatly from book to book:
X Team v. Y team YES/NO score in x:xx minutes
Not only am I consistently finding arbs here but I also find risk free "middle" opportunities. That is, getting 30 seconds of a game "free" where a score would resultin a win on both wagers.
What is a good approach to pricing this prop? Is there an accurate enough way to price it where I can discover the weaker line and just bet that? Should I stick to arbing/middling with this style prop?