It is all about expectations I would say. For example, I had a car that was worth 3k Euros at that time and I was happy with it, even though its quality was bad

It is all about expectations I would say. For example, I had a car that was worth 3k Euros at that time and I was happy with it, even though its quality was bad, it was running without problems and accomplished the task of getting me to work. The story would be much different in that case if my car had been worth 30k Euros.