It's very interesting to go back & look at the prices that cables were sold at.
Hi-Fi Answers March 1989 - KJ West One 'The Speed of Sound' advert (....ahem - no ill intent towards anyone who may have been involved)

1 metre pairs of interconnects:

QED Incon - £14.95
QED Incon Screen - £18.95
DNM Solid Core - £25.00
Deltec Slink - £32.00
Monster Interlink 400 - £32.00
Kimber PSB - £36.80
Monster Interlink CD - £46.00
Vecteur - £49.00
Audioquest Livewire Ruby - £45.00
van den Hul D102 Mk.II - £66.00