In case you missed it, the brackets for the PvP battlegrounds have changed. There are no more 10 level gaps for battleground characters. This change will be great for those that are informed as we can snatch up gear off the auction house from the uninformed or ignorant players that will be posting Best-In-Slot level 13 and 14 items on the auction house.
Blue Post: (Source)
The uneasy armistice between the Horde and Alliance is steadily cracking beneath the strain of Deathwing's devastating return and the Shattering of Azeroth, heralding a new era of bloody conflict.
The clash between the factions has also never been so hotly contested: Battleground brackets now match up teams more evenly.
The new brackets span five levels each, except the final bracket composed of level 85 players:
10-14 30-34 50-54 70-74
15-19 35-39 55-59 75-79
20-24 40-44 60-64 80-84
25-29 45-49 65-69 85
Fighters can also join the battle in Arathi Basin, Eye of the Storm, and Alterac Valley at an earlier level than ever before:
Level 10 - Arathi Basin and Warsong Gulch
Level 35 - Eye of the Storm
Level 45 - Alterac Valley
Level 65 - Strand of the Ancients
Level 75 - Isle of Conquest
Level 85 - Battle for Gilneas and Twin Peaks
These changes should offer players a more consistently competitive experience in the Battlegrounds as their characters level, as well as provide for more exciting PvP conflict than ever before. Are you eager to try 35-39 Eye of the Storm? How about 45-49 Alterac Valley? Perhaps you'd like to cut your teeth on a 10-14 Arathi Basin.
New Twinking Markets
This change brings about a whole new option for flipping twink gear to level x4 characters. Some research will need to be done to find what items are best-in-slot for the various classes at level 14, 24, 34, etc., but I am willing to bet that a lot of them aren't even blue items. Many of them are probably green items. So this is your heads up. Get to researching gear and start off by buying up any cheaply priced level 14 blues. I will report back later once I have a chance to get some research done. Report back here, if you find any uber-items that end in level x4.