Do I see a trend here? If 5dimes has a line -150 when my book has it +200, I should blindly take the +200? Or +200 and the draw line too? Or similarly, if 5dimes has it -1200 and my book has it -200, blindly take the -200? (I'm guessing the answer is an emphatic no, because it can't be that easy.)
I viewed the odds after the matches were already over. When showing the scores, does SBR show the last in-play odds or the closing line? It wouldn't make sense for them to show in-play odds after the game is over.
They probably show the last line they had before they closed the market. If you find market differentiations that big, ever, you're nearly always doing something wrong