I would run it like this:
Get a group of people that each want to run a different class and all roll on the same server. Snipe the AH for each-other and put items in gbank (locked). If it's truly just for the 1 class and 1 person maybe give or sell. Otherwise I'd run weekly Archimode mythic DKP runs for a chance to buy those items. It would encourage people to participate for a chance at these trinkets. Obviously if a person wants to buy an item off AH and can afford it, sure buy it. But if they see a nice cloth item as a hunt might be nice to have each-others back. I saw just a sick cloth shoulder, 845 with + speed for 73k the other day. And a 845 mail helm for like 40k. There are deals out there.