Is your feature request related to a problem? Please describe.
I failed to sell a bunch of items 100 times each, so I put them in my warbank so my enchanter can DE them. But on my enchanter, it says failures 0, so I can't remember which items I'm meant to DE and which are there for another reason

Describe the solution you'd like
Now that warbands are a thing, have an option to track sales/failures, and costs either globally or at least display it per server.
eg,
Server 1 Failures 140
Server 2 Failures 5

or
Failures All Characters 145

Interestingly, on the Selling interface at AH, it does remember price history and your history for all characters, just not failures.