
Tattoo ink kits offer several pigment colors as part of a bulk purchase. This is done at times for the conveniences of simple packaging and a well-rounded variety. Generally, the primary purpose is for the convenience of cost.
Some tattoo ink kits are designed primarily as a sample options. These will include the basic or popular colors of a particular brand. For these, bottle sizes are often pretty small. Other kits may be more designed to allow artists to stock up on pigment. For instance, some may be comprised of several larger sized bottles of black for lining.
Tattoo ink kits range in price according to the quality or rarity of the pigments, the brand names, and the number of bottles being presented within a set. Black may or may not be included as part of such a color set. Because it is such a high demand coloring choice, it may be assumed that you would buy a larger amount of black on its own.