I was able to afford most of my mount money on the chars' own at 40 for both the druids and the shamen, and my druids have 200-300g each at 55, with any luck after I spend a lv or two in outland I can afford their epics too by 61 hopefully(I don't wanna spend any longer than I have to travelforming everywhere any longer, it's a pain in the ass and slower lol)

Basic rule is to know your suffixes: Cloth/Leather of the Eagle stuff sells great, Leather/Mail Monkey/falcon gear sells great, mail/plate Eagle and Bear stuff sells great; cloth will ALWAYS sell well(mageweave's up to 4g/stack on mag US alliance atm lol) so once you have first aid sell the rest(or tailor if you have one) and as said above, if you have a 70, do those daily quests! It's free gold yo.(Though I haven't done any in weeks, I've lived off the 1300g my Rogue got from spending a weekend cleaning up all his SMV quests that were never finished at 70 lol, I got a Darkrune to use the Shartuul event though and that'll bring me at least 60 to 100g once done)

Never depend on a profession to profit. My rule of thumb. Anything that uses mats is lost profit for the mats, and if people provide the mats you're hoping for a tip to help out, and with how expensive parts for most things get you'll be lucky to sell anything for much profit. Just farm high-sale greys, cloth, gathering professions, and hope a rare drop will grace you along the way ;p