I have a 10 foot pair (not counting the leads) of WyWires speaker cables from 2011. This is a vintage before WyWires started selling different grades of cables. They are in very good shape, but ten years of light has "lightened" the color of the leads. Here is a review from 2012:

https://www.dagogo.com/wywires-interconnect-digital-speaker-cable-review/

The price is now $200, which includes PayPal fees and shipping in US lower 48. I can ship elsewhere at an extra cost.