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For pre-monthly, there has a maximum base amount.
Each rank has a different maximum base amount you can get. I think "Dewi Aries" asking for pre-monthly and not monthly claim, because as we know there is no maximum base amount you can get on monthly.
It's all depends on your rank & waggering, however for pre monthly to get maximum base amount you need to waggering some minimum amount. The big question is only, how much waggering we need to get the maximum base amount during one month (No body know about these one).