The trek typically takes around 15-19 days to complete, depending on the specific itinerary and the pace of the trekkers. The trek involves long days of hiking, often at high altitudes, and the passes can be physically and mentally demanding.

The cost of the Everest Three Pass Trek can vary widely depending on a number of factors, such as the time of year, the specific itinerary, and the level of service included.

It’s also worth noting that some trekking agencies offer a package deal that includes things like permits and TIMS card, you could also get a deal with a company rather than hiring a guide independently

Keep in mind that the cost of the trek can be influenced by factors such as the time of year you are trekking (peak seasons will be more expensive than the off-seasons), whether you are hiring a local guide or a western guide, and whether you are choosing budget, mid-range, or luxury accommodation.