I didnt get to 70 until 2 days after release, and am only at 76 now, so I have yet to fly at all. I am making TONS of gold. Skinning in Northrend (which I lvled from 1-350 in 2 hours just for Northrend) is a money machine right now. Borean Leather sells for 35g a stack and I dont even have to kill most of the mobs to get it. I am just taking all the leavings from everyone else in the new zones that are trying to lvl and dont skin. I also get Arctic Fur about 1 every 50 skins and that is selling for 75g EACH. Throw that in with all the quest gold and what I get from vendoring everything I come across, flyers for all will be no problem. I currently have between 2.5 and 3.5 on each toon and my bank/ah alt is sitting on 5 k. Just go level and take that free money laying on the ground in front of you in. (Also, dont learn ALL your new spells right away, that helps save cash now)