Why anyone would put up with any bookmaker taking 5% of your winnings for betting at top fluctuations is beyond me. DAS might provide a reasonable service in some areas but their policy of taking a percentage of winnings on top fluc bets is highway robbery.

When you bet top fluctuations YOU are doing the bookies a favour by giving them an opportunity to frame an early market. Why do you think they offer top flucs in the first place?

There are plenty of bookmakers who offer top flucs and don't pinch your profits.