In order of price:
Periapt - $65 (12-14 days build time)
Arctic Cable - $80 (12-14 days build time)
LQI Cables - $150 (shipped almost immediately)
Someone here recommended a Dyson Audio pure silver cable which costs about the same as LQI but I have no personal experience with it.
To add on to to this, I've bought a 4-pin XLR cable from Periapt for my HD600 and I was very pleased with it. The cabling has no fancy patterns to it, but it is well built and solid.
If you want fancy cabling for an affordable price, take a look at https://www.koycables.com/
I was lounging around on the r/headphones page on Saturday and I came across this guy's work: https://www.reddit.com/r/headphones/comments/by31lo/i_guess_ill_make_this_a_thing_one_more_recent/
He did a very nice job on this one cable, so I messaged him. I think he quotes at around $100 depending on what you want. I may reach out to him in case I acquire an HD800S in the near future.
Any one selling by any chance?
Warm Regards,
Bryan