Usually it's very anecdotal and hard to tell ahead of time. My current shoes cost 40€ and that was about 4 years ago. So they have lasted atleast half as long a

Usually it's very anecdotal and hard to tell ahead of time. My current shoes cost 40€ and that was about 4 years ago. So they have lasted atleast half as long as your expensive shows for 1/10th the price.