costs

will be in Papua next year. A friend will come with me and I want to know how much costs we will have (cheap guesthouses/cheap places to eat), she want to know, how much it could be cost. The flights I will add extra. So I want only know how much one person need, if you use the cheap places. Sorry for my english. Thanks for the infos

Do you mean (Indonesian) Papua or PNG?
The latter is much more expensive, but even the Indonesian side is quite pricey compared to the rest of the country.
In PNG, cheap village guest houses can be only $10, but accommodation in towns can cost much more.
Daily costs are very hard to predict without knowing where exactly you plan to go, as costs vary, and getting around by air increases them significantly.
Food can be cheap enough if you are not fussy - can even eat for a dollar or two.