My black ink Partone was empty, so why not buy an entire multipack, because the others surely be empty even gradually. The cartridges are available in a hard to a opening Verackung. Even with scissors difficult. In general, the cartridges are functionally very good, as I expect it from an original cartridge. About the price can be discussed, but I think that the equivalent of around 11 per cartridge are not too much.
