Despite High Repair Costs, Sealed-System Failures Drive 35 to 40 Percent of Refrigerator Expenses
https://urgent9166341107appliancerepair.theglensecret.com/understanding-component-failure-patterns-helps-homeowners-know-when-repair-or-replacement-makes-sense
The compressor is the most expensive refrigerator component to repair or replace, with sealed-system failures running $1,200 to $2,500 depending on unit age and rated capacity