We were in Indonesia for 17 days and spent a total of approximately $1910, for an average of $112 per day.
Lodging averaged about $50 per night and ranged from a shack on the beach with no hot water (or even fresh water for that matter!) to a 5 star resort in Senggigi, Lombok.
To give an idea of general costs:
An hour long massage in Ubud was $34 for the both of us total. A day long tour of tourist sites around Ubud with a private driver was $50 (the driver paid the costs for both admission fees as well as police checkpoint bribes!) The 45 minute speedboat service from Amed, Bali to the Gili Islands (which fortunately didn’t sink while we were on it, but has been known to sink in the past!) cost $98 for the both of us combined (we bought the tickets on-line but people who bought them directly at the “pier” paid less.) Meals were very inexpensive — a beachside plate of nasi goreng (fried rice) was about $2.50. A large beer was about $3 in the local mart. Fancy food in the resort cost closer to $8-9 for a dish.
The average cost does not include the price of our flight from Singapore to Bali which was $208 for the both of us total on Air Asia.