Many Indonesian member post the cost of living in Indonesia, but I am really sure it depends on what city and village you live in. I ever heard my friend who lives in Vilage can live with only $100 a month. that's cost an impossible thing today when we live on city where that $100 can spend at all only 3 days. I have experience even been economical after I don't have a job 10 years ago, I just can live with only $50 a month. I don't rent a home for sleep, because I sleep in the mosque after that I clean it and and get a free breakfast from Donatur. So with this situation, cost for live is just a number, to realize it is depend on how you manage it.
Nothing is impossible, we are living in Indonesia bruh, everything can be done quite easily when money is not enough.
I live in a village and also close to the city, the average monthly income of factory workers is around $150 ($200 is too much and this is only for office workers or workers in government or companies that follow the minimum wage standards).
Even those who work in private companies can only make $100 per month.
It's quite impossible to live on $100/month, but it happens and if it's enough, it depends on how you manage the money.
The cost of living is just a number, it depends on how you manage it properly.
There are many kind people who provide free breakfast etc. and that is a help for those who earn less than $100/month.
So each region in Indonesia has different income levels.
In big cities, the income is high but the cost of living is high.
In the villages the income is low but the cost of living is very cheap.
Imagine that for only Rp.5000 or $0.30 you can enjoy rice with side dishes to relieve your hunger.