The Inca Trail prices are around $500 to $750 (depend Cheap or Superior service), the discounted price for Inca Trail students would be a bit lower - about U$ 30 less - but the discount only applies to the Inca Trail permit & the Machu Picchu entrance fee. On the Inca Trail should include Inca Trail & Machu Picchu entrance fees, transportation to the head trail start from Cusco to Km 82 or Km 104, Double tents, all food, water, knowledgeable guide, guide tour of Machu Picchu, tourist bus ride down from Machu Picchu to Aguas Calientes and transportation from Ollantaytambo to Cusco, tourist train from Aguas Calientes to Ollantaytambo.
On 2017, If you wanted to obtain the Inca Trail student discount, usually you presented your ISIC cards or green cards. But for this year. It is not valid. you do not need the ISIC card anymore. you can present your university card and you can have the discount.
If you would like to get the discount, it is very important to present your university student cards original. Once presented, the Tierras Vivas Tour Operator will confirm, it is possible to get the student discount or no.
The Inca Trail price for the 4 or 2 day trek these days, as permit fees & other non-negotiable costs rise, Inca Trail fees increase. Much lower prices either do not include all of the above (meaning you have to pay out of pocket yourself), or cut costs by providing poor food & equipment, or at the expense of the porters & guides with low pay.
"Inca Trail Luxury" which cost even more, will include porters & perhaps the rental items, and maybe offer a "toilet tent" (portable outhouse) maybe fancier food & equipment. The luxury tour price is higher than $950; actualy price depends on the agency.