Why one route produces two very different prices
The most common mistake travellers make when comparing Everest helicopter quotes is comparing a per-seat number against a per-aircraft number. A shared flight divides one helicopter between passengers, so the number you see is roughly the aircraft cost split several ways. A private charter is the whole aircraft, so it looks several times larger while often costing a group about the same in total.
When you collect quotes, normalise them first. Ask every provider whether the figure is per person or per aircraft, how many passengers it assumes, and what happens to the price if the group size changes. A quote that does not state this clearly is not a quote you can compare.

