Smaller Bets on High Limit Tables

 The only single zero tables I have been able to find in Las Vegas have $100 minimum bets.  Each of the outside bets must be for $100 also.  The smallest chip you can use on the inside bets is $25 and your inside bets must add up to $100.

So these tables have a $100 minimum bet on any outside number and the smallest chip size is $25.

Instead of betting on two dozen on the outside which will have a $200 minimum bet you can bet $25 on four Double Streets (aka Line Bets).  This gives you the same odds as betting on the outside bets.  You don't have this option on the column bets or the Odd/Even or High/Low.