Expensive dose not mean reliable!
It may be a special case, but our 900€ Miele washer did last half as long (2,5 years) as our 500€ Privileg (5 years). Our Panasonic washer (700€) lasted only 1,5 years.
Our 350€ Siemens dryer is supposed to last at least 3,5 years as our Miele dryer lasted 6,5 years for 650€.
Our 700€ Siemens induction range lasted approx. 4 years. Now we bought a Ikea (aka Whirlpool) for 600€ with 5 years warranty.
What I want to say: Buy cheap does not mean buy bad. I know, some brands mean quality, some mean the opposite. But you just can't make a straight predictionon wheather you have luck or not. We have heavily used laundry appliances, and as we have to exchange our washer on a 5 year basis, it does just not make sense to spend 900€ on a brand that has already let us down. On the other hand, we will always buy Miele vacuum cleaners. They never let us down. Our 26 year old vac is still exisiting. We just baught a new one because it just looked ugly in the end.
So, if you know an appliance is known to break often, buy cheap, it will give you a better price to value ratio. If you know what will last because of light use, buy good and get more for longer.
To sum up: There is no one rule to follow. Analyse your situation and see what fits best: Quality or value.