Those cartilages are on reserve! That is the only inks I have bought for over 3 years! They do wonderful and I recently did a project that required me to print about 100 pages so needed more ink when the last ones expire. i enjoy shopping at Staples at St Lucie West the manager and Sue take good care of me & my husband. I have used Staples for over 30 years buying a special typewriter in Miami in 1988. Thanks. I still have it!