@grandmaser97, my advice is to simply ask each casino if they allow such large stakes on sports betting - simply visit all online casinos that have sports betting, collect their contact e-mail addresses and send them all the same query.
He asked of bookies or book makers and not casinos. If it is about casinos, I would have told him to use Livecasino.io which has been my favorite not because I joined their campaign but because I like using them and they are excellent. Casinos are for gambling while bookies are for betting. Bookies are about sport matches while casinos are for games like blackjack, roulette, slots...