About 10 years ago, I know transparent bi-wire was just a double run of cables out of the network box for connecting to four binding posts and was priced a small premium above single wire cables mainly for the additional pretty terminations.
Transparent bi-cable, on the other hand, has one network specifically for HF and another for LF (albeit in the same box), this was about priced 50% more than the single wire version
Looking at the pricing now, perhaps they streamlined the catalog and got rid of the old bi-wire nomenclature and then bi-cable became the new bi-wire. You could always call and get the answer straight from them.
