Replacement becomes mandatory when drum assemblies exceed 50-percent of original appliance value

https://urgent9166341107appliancerepair.theglensecret.com/dishwasher-repair-justifies-professional-service-when-appliances-reach-their-documented-mid-life-threshold

The drum assembly is the most expensive component to replace on a dryer because it houses the internal structure that must meet strict load-bearing and thermal safety limits set by manufacturers and regulatory bodies