These are seldom kept by hobbyists. Some years ago we had a Tonmo member in Australia keeping some, and bobtails are sometimes kept in labs. It's been years since I've seen one for sale in an LFS.
There is a section in our book (link on the Tonmo home page for purchase) on these little squids and how to keep them. They are not so difficult to keep, but most people find them boring and would recommend another pet.
We had a member in Hawaii keep some last year that she caught. The tank conditions were not optimal but she changed the water very often and they live a few months. If I am not mistaken, they are very short lived (less than a year) even in the wild. Look for threads started by littlemarley. I have referenced one but some hunting will give more of her experience.
The Exotics and Rare Species forum is only accessible when logged in, so search engines and guests cannot access its contents. We think this helps limit the exploitation of these delicate / poorly understood creatures. Please treat this information with care!