Wall oven replacement is not like replacing a freestanding range. A built-in single or double wall oven is installed in a cabinet cutout with specific dimensions β replacement requires sourcing a unit that fits the existing cutout, modifying the cabinetry, and professional installation. That typically costs $800β$2,000+ above the appliance price. For this reason, wall oven repair almost always makes economic sense, even when the repair cost seems high.
Double wall ovens are a specific consideration in LA β Brentwood, Bel Air, and Pacific Palisades kitchens frequently have luxury double wall ovens (Wolf, Thermador, Miele) that are integrated into custom cabinetry at significant cost. The repair vs. replace math on these units strongly favors repair at almost any repair cost.