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Since it is a daily contest, 0.5 steem will be affordable for everyone just to gamble with their luck. If someone has more money they can purchase up to 05 numbers. But as @emmawalt suggested if a particular number has already been claimed by someone, others are unable to place their bets on that specific number.

 last year 

agree,
if someone has bought the number, others cannot buy that number
And I would suggest 0.5 steem per lottery ticket is an ok price to be in the lottery and numbers will be from 1-50.
And can be increased later from 1-100 if the lottery becomes popular

Great! this would be the ideal work plan I believe.

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