I've got 29 alchemists to level.
And have a little over 300k.
Plus about 100k in speculation mats, which I hope will sell well.

250g x 5 toons per team = 1,250g
Running 7 teams, so 8,750g to upgrade my flying for the old world.

Going to give my roommate 25k for 310% flying, on his main team.

Herb availability will be the largest factor for me.
Hopefully, not too much of a cost.
But will probably cost a fair bit, especially trying to buy that much and so close to release.