I purchased three packs of Next socks at £10 each a couple of months ago, I don't usually get them from there but they have pairs where the footbeds have a pattern so easy to differentiate between mine and my sons' black socks.
The 15 pairs plus others I have in my sock drawer have been worn in a normal rotation so not excessive where yet nearly every pair either has a hole or is wearing thin. In comparison, I have Marks and Spencer socks that are several years old and not a single sign of wear.
I emailed a complaint about quality, I got an auto-response saying they would reply in 4 days. Two weeks later - nothing. So after a chase, they offered me a 25% discount. Is it me or is that not good enough?