Do not fall for the trap of a gambling site marketing themselves as having 0% house edge. It is unrealistic, period. Operating a gambling site is a business and where does the site's revenue come from? Yes from the edge they have in the games. It is what allows them to operate for the long run and it is their bread and butter. They will be hit by short term losses thru lucky players winning but they still make money from them in the long run because the house edge makes the gambling site a winner.
That 0% house edge is a truly effective marketing strategy of gambling sites. They are making that kind of promotion so that gamblers will jump to their site and use their games.
But in reality, you will just realize how are these sites are keep on operating if most of their gamblers are just low ballers.
So they may say that it is 0% house edge but there are charges for in game plays.