Are XLR interconnect sold as pairs?

[Mouse]

Are XLR interconnect sold as pairs? They're always photographed in pairs, whereas all the other cables are photo'd individually except speaker wire.

"Standard length of each pair of cables is 1 metre."
But on music direct it doesn't make note that this is a pair.



I found out today my audioquest mackenzie cables have a flaw, I don't know if it affects sound quality enough to matter, but it does send a different level of signal to the amp meters. The right side shows more power in the amp meter; swapping the L and R cable makes the left side show more power.