neb:alasta:Look at it the other way round, do you want to put it on Trademe now as working fridge or on the kerb in a few years as inorganic rubbish?
On the other hand, I don't want to replace it if it has a few years of life still left in it as fridges are an environmental nuisance when disposed of.
In this case I would only buy a new fridge it if you could repurpose your old one. Put it in the garage/laundry to be used as a beer fridge or overflow when guests are over.