I have purchased over a hundred pair of running shoes
over the decades. Since they are expensive, I look for
outlets and sales. I've that shoes manufactured several
years previous DO lose their bounce quicker than normal.
P.S. This is not a running group, but proper athletic equipment
is very frugal. Exercise cuts way back on medical care.
Avoiding one visit to a doctor for an athletic injury in the
USA's backward medical system buys a years worth of
athletic gear.