Is level 40 Mount/Riding worth it for Druids ?
Or should i save up for an epic mount?
Get the mount at 40...
It's like ~90g, depending on rep. By the time you reach 40, you would be pretty close. But at this stage in the game, if you have any friends in game who are already 60, you can find a buddy to spot you the balance. Travel form is great as a druid, it makes the mount less important, but it still really sucks to not have the mount. Especially if you're trying to travel with a group of people who already have theirs.
I didn't get mine until level 43. It made a big difference when I got it.
You get gold super fast as you level. I've obtained my mount money from 30-40 questing/dungeon/grinding. You will make it all back in your early 40's if you properly save it.
The game is purposely designed to eat away at time. Do everything in your power to minimize it!
While it's not really needed and I personally skipped it to 60 to "save money" I realized stupidly that you still have to buy regular riding to get to epic anyway so I wasn't saving as much as I thought. So my advice in general is don't freak out if you can't buy it at 40 but do get it when you can afford it because it's worth it.
As a druid, I cannot stress enough how much improvement did buying mount at 40 bring to me. Seriously, it may seem like it's not a big difference, but it is. Besides, the most expensive of the two (skill + mount) is the skill, and you'll need it anyway.
So go for it, you won't regret it.