It is very common for whip enthusiasts as they increase their skill level to want to use a whip in both hands to learn more complicated and challenging routines. That will bring them to a "Matched Set". Any whip wanting to be made can be made into a matched set. To accomplish this they will need to be made at the same time. This way every layer can be "matched" every step in the process. This process requires a lot more time and energy to the Whip Maker's process then simply making two whips. This is why their is a $50 Premium for all Matched Sets.