I got the Arena Grand Master trinket on my dwarf hunter. It was a royal BITCH but only took about 2 months. My hunter was level 19 at the time, so the amount of damage absorption was excellent for me.
I farmed the trinket on TBC open day. Practically 0 competition. Especially with the 14 layers we had going on.. Got it done in 3 days Much butthurt from lvl 19 twinks we're had. And yes I had an alarm for every 3hrs set to farm the chest lol.