Yes you have got the good point, vdice have to lower this down 0.22 at current exchange rate counts $20 which is really high minimum for players.
Also maximum bet for 19x multiplier is only 0.44 ETH which is very low limit compared to other normal bitcoin/altcoin dice sites.
Maybe they haven't taken the recent points into consideration to reduce the minimum bet amount. They should immediately do it otherwise they may lose a lot of smaller bets from many people. Including me, I don't want to bet so much of each game. It better to reduce as soon as possible.