So, I've got a few of the old discontinued shirts (and some of the other slots too if you are interested) scattered across a couple of servers. These items are no longer available in-game, and they are pretty cool to have. On most servers I've seen they are going for about 50-70k gold, but I'm taking offers now (including pet and mount trades in addition to gold.)

On Sisters of Elune I have:
Brawler's Harness - Horde

If you have access to other servers, I've also got:

Wyrmrest Accord:
Brawler's Harness - Horde

Borean Tundra:
Brawler's Harness - Horde
Recruit's Shirt - Alliance
Thug Shirt - Horde

Farstriders:
Brawler's Harness - Horde

Drop me a line here with an offer if you are interested and we can work something out. Thanks.