That may be true, but that logic could be applied to almost anything. It could be that vendor B has a better shipping system, which is worth the premium. Or that vendor A is unreliable and frequently drops orders. But without knowing that, our theorizing it is just an assumption. What we do know is that these prices are not logical; both your examples are in the normal price range for a patch cable while the one paid in the real case is not. Even if their choice was based on some factors as you described, they would have to be very strong to warrant the purchase price. Given the many available suppliers of such equipment, and the fact that they probably buy ethernet cable with some frequency, it would in virtually all cases be worth it to find a supplier who can deliver cable at normal prices.