I decided to turn my unwanted tank into a PVP character. For this I needed the Baron Thirsk helmet which, according to UESP, was apparently in a treasure chest in the Legionary Vault. With 60 key fragments I had a "chance" at the helmet, which seemed like a good deal, seeing as I had 3,700 of the things.
However, when I got to the vault there was no chest, just a vendor selling Baron Thirsk
shoulders (for 100 keys!), a couple of motifs, a style page and some random gear coffers that were priced in tel var.
After a bit of a panic, I realised I already had the helmet in my sticker book

But I was wondering: have the chests gone now and been replaced by the vendor? Have the monster helms gone with them? Or is the vendor just a temporary Mayhem thing?
It's a tradition, or an old charter, or something...