I don't believe that Animotions has transferred all of the separately downloadable capes from the old 3D-CC site, but a ton of superhero characters with capes are available for download. You could browse the DC and Marvel sections until you find a good style.

Gloria Gast has a free cape prop at Poser Junction.

While you're in the Marketplace, take a look at brycetech's Dracula clothes and JesterCGI's flowing cape, also.