so agility ill do for roughly 30 gp exp. most do for about 35-40 for what ive seen
so that alone is 20m.
and i can do theiv for 3m.
another route as well is getting fish exp. via barb fishing.
with barb fishing you can get agility exp nd str exp that way if your interested, people train that for about 12gp/exp, and u get multiple stats. you could get fishing up until you get 70 agility. let me know
doing the fishing method tho will take significantly longer