If am looking at a 10 1/2 point spread and I want the favorite, you can bet your behind I will buy that 1/2 point down to 10.
But, no names mentioned, yet, but a solid looking [looking] Book, will not allow free-money point buying. Bonus money. I hate that!
So, this same Book, which gives big time bonuses, knows, if you get a large bonus, you may be as old as Rip Van Winkle before you can use all that bonus up. If fact, it's like 80,000 or more for me. That's the amount I must spend to able to legitimately use that big bonus up, or withdraw any winnings.

Another sweet kick in the behind; if you put up 475 to win 300, you'll only get credit for the 300 up money, toward that rollover.
Causing you to likely get to Rip's age for sure before you'll be able to cash in....or the other obvious reason for these rather silly rules; go broke.

The moral of this story; Before signing in, check all the tricky angles hidden behind the curtain.