Questão jurídica principal
Whether the parties had proven a fixed-price contract rather than an approximate estimate
Decisão extraída
Neither party proved a fixed price; the courts could rely on the rules for pricing the work by value and expenses.
Fundamentação extraída
The alleged written price of CHF 18,620 and the alleged oral forfait of CHF 10,000 were both unproven. The appellant's objections were largely appellate and did not show arbitrary fact-finding.