The main factors contributing to the high price of a Kilimanjaro hike are labor costs and the park entry fees plus taxes. To climb Kilimanjaro, it is mandatory that you have at least 3 porters per person plus a shared cook and guides depending on the size of the group. This brings the total labor cost of climbing Kilimanjaro to $100-$150 per day per person. Since Kilimanjaro lies within the national park, you will need to pay the park entry fees for yourself and the crew which amounts to somewhere between $700 and $1000. Besides, there are other things that contribute to the cost including food, transportation, conveniences, and hotel accommodation before and after your trip. While on the trip there are no lodges and you need to sleep on tents for which all logistics and camp equipment need to be carried by humans including the food that you eat. Due to all these, the price for climbing Kilimanjaro seems to be a little bit more expensive. Remember that the companies that are offering you lower prices are either not legal operators or they do not treat their guides and porters fairly.
