Kernrechtsfrage
Whether the cost advance for the cantonal appeal was paid within the time limit.
Extrahierter Entscheid
The advance had to be treated as timely because the appellants handed the payment order to the post within the deadline and the cantonal practice was ambiguous; under good faith, the deadline was preserved on the more favorable variant.
Extrahierte Begründung
The cantonal court's stated practice was internally contradictory. Since it said the deadline was met either upon posting the payment order or upon debit of the account, the appellants could rely on the more favorable interpretation. Refusing to recognize timeliness was arbitrary and violated good faith.