Whilst not cycling, I did buy a pair before setting out to walk the SW Coast path about 10 years ago.
I got them at the London Marathon exhibition where they had a guy wearing the socks stood in a transparent perspex tray filled with water.
Of course the time of year I chose for my walk turned out to be, at the time, the wettest June in living memory ☹️
The socks lasted about five days of intermittent wearing before my big toe poked through. The up and down terrain probably contributed to the wear and tear, and pedalling probably wouldn't put the same stresses on the socks, but it's something to bear in mind if you have " pointy" feet.