I just have a set of valhalla jumpers set just from a local customer trade in. Very nice, pristine condition.
Jumpers are the right way to connect bi-wired speakers.
Bi-wired speaker cables are not recommended by Nordost since it cut the conductors of each channel by half and lower the performance of speaker cables(all high end speaker cables have more conductors or bigger conductors or both than their lower priced models, so it is obvious that bi-wiring is a stupid way to go)
Priced low to let it go fast.