Cappers betting big bucks on their own plays resulting lines move.
Think about this one. How much action u think will need to move lines on a game across all major books Pinnacles, 5Dimes, Bookmaker, etc.? $2 million across multiple books? If that capper RAS has that kind of liquid cash playing 3 games daily, they certainly don't need to sell their plays.
1st and foremost, lines many cappers give out are pretty off IN THEIR FAVOR to start with. 2nd, if they are really good, they might have some syndicates tail their plays.