Why so many AQ Hurricane PC's for sale?

Careful buying used AQ especiially the storm and higher lines. Lots of fakes. 
TMR usually has preowned hurricanes. I’ve bought a few from them. 
I am not a fan of AQ Thunder, Tornado and Hurricane they just don’t sound right to me but I know @ghdprentice enjoys them. 
If you’re looking for big bass and dark sound, although with pretty nice mids, give it a shot. I like the Nordost stuff - Frey 2 is great on amps and digital. 

I realized my post didn’t really answer your question.
AQ is a major brand. They sell a lot of cables and you see the quantities on a used a used market proportional to new sales over time plus people just rotate cables. Sprinkle that with fakes.

Cables are very system dependent. I sold my hurricane's after comparing them directly to Clarity Audio Vortex power cords. The Vortex's are more open and detailed compared to the hurricane's in my system. I didn't realize how dark the hurricane's sound until I compared them to the Vortex. 

@ricred1

Looks like you sold the Vortex. You found a new preference?

There are 13 Hurricane PCs for sale on USAM, 8 of which are dealer sales. Maybe not as out of line as it might seem.