In Reply to: well posted by helenb on Wednesday, 19. August 2009 at 18:56 Bali Time:
don't forget, if you share an inexpensive room, it might be only $10/night.
Must take into account transportation costs, unless you are spending all of your time in the vicinity of your lodgings.
that's about it, really. The rest you can guess based on your personal preferences.
Most people can't resist buying "things" as they are so cheap.