You may end up 3k-4k overall, but on bosses you should be like 4k-6k roughly depending on mechanics.
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Just with lightning bolt spam you should easily pull 4kdps on trash and 4-6kdps on boss with cooldowns and heroism. Im lazy and havent set up click macros but just use lightning bolt and have lightning bolt glyphed. I do have a moonkin providing the 13% magic damage buff but I would assume that your DK would be specced to do that if u dont have a druid.
This is one of my shamans http://eu.wowarmory.com/character-sh...en+Mill&n=Xter.
As you can see theres still a lot of room for improvement on gear. Dont settle for 3k dps in t9 gear :)
I probably mis-spoke. I have 3 pieces of t9, but a lot of ilevel 200 gear still, including a 200 weapon and shield. I'm only at about 2k spellpoints. So I do see my dps going up and heroics are getting easier. I just just don't see my gold going up more than about 100g a day per account after getting about 50 badges a day.