Many people, myself included, have earned the set during the pre-Wrath invasion event, only to have it be missing from our appearances tab. They are unable to be restored due to missing logs, which have been “purged due to data storage limitations”.
Please add a vendor to the Darkmoon Faire which sells the appearances providing you have the original tabard/achievement from the event, akin to the Scarlet Quartermaster. Hell, even add them to the BMAH, I don’t really care, but it would be nice to have those appearances available again in some way.