hi there,
Chile is not as cheap as other South American countries. If you want cheap prices then, avoid late-December to mid-March months as it is high season.
To give an idea of cost, allow US$25 per day for food and lodging although if you
camp or stay in hostels, you can save even more.
If you want to enjoy your stay in
Chile more comfortably then, allow US$60 per day or US$100 per day if you want to enjoy a bit of luxury.
Hope this helps
Vacationbuddy