Wished there was more credible reports on use of outdated ink. Good value depends upon experience over time. So far I've not had any problems.
Shelf Life is certainly valuable concern both for protection of the manufacture and information for the buyer. It is a delicate balance between being abused as marketing information and good proactive information for the buyer to use consistent upon his needs and usage time. What is needed is more information about complications that can arise due to aged usage of the product so the buyer can make an informed decision based on his use and technical competence to deal with the complications that may arise.