I'll be going to Peru in a couple of months and trying to finalize my itinerary.
1. Cost of flights Lima - Cuzco. How far in advance is it recommended to book the flights (in other words can I buy the tickets in Lima 2 days before the flight).
2. Cost of taxi from airport in Cuzco to the Sacred Valley (unsure yet where I'll be staying)
3. Entrance fee to Machu Pichu.