Raphael wrote

How do you know a good wiper blade

Last longer than the bad ones.

(or are they all the same?).

Nope.

Picked up three sets of wiper bladess recently which was harder than you'd
think because prices for any one length were from $4 to $18 each.

Since the wiper blade can be put in our hands, what do you look for?

Last longer, but that’s not easy to know when buying them.