If high limits and no-ban is what you are seeking, there are plenty of books out there like Pinnacle and asian books like SBOBet etc which get the job done and charge low margin on your bets.
Oh, I thought the "fixed games" he's talking about is some sort of bet fixing for customers. He's referring to match fixing that is probably illegally everywhere?
So he/she is basically looking for fixed matches around the world to profit from?
It is illegal but that is happening, even in big games fixed game is happening, but the thing is, there is no assurance that such information is legit or maybe the guy is just transferring the risk because if there's really a fix game, they would not share it, instead they will keep it them selves and make money out of it.