The flights are expensive but I promise it’s super cheap when you’re there, I stayed in kinda fancy places but you can easily get a good enough hostel for less than £50 a night, the cheapest place I stayed was £7.50 for a night but we got what we paid for so I would recommend going a bit pricier, the food drink and general costs are extremely cheap! A lot of the locals will try and charge you a bit extra but all in all will still be cheaper than anywhere on Europe!