Kernrechtsfrage
Whether the contract price was agreed on a measurement basis or as a lump sum.
Extrahierter Entscheid
The cantonal court's finding that the parties actually agreed on pricing by measurement was binding; there was no room for review as an objective interpretation issue.
Extrahierte Begründung
The court treated the conclusion as one of actual, not hypothetical, common intent. That factual finding could not be reassessed on appeal.