This is includes every transportation first of all from pick up to until departure drops.

Everest base Camp

including gokyo and three passes: 16 days only in mountain package per person: package 1425 euros, only every transportation by flight to ktm to Lukla to ktm in Kathmandu 3-4 star hotel 2 Nights.
Only guide service: guide and porter salary 788 euros. Includes guide flight also.

Annapurna Base Camp

trek 8-10 days 822 euros for package.
648 euros for guide and porter salary and every accommodation from Kathmandu to Pokhara to mountain also includes.

Langtang area

trek 8-10 days 822 euros for package.
648 euros for guide and porter salary and every accommodation from Kathmandu to Pokhara to mountain also includes.

Manaslu area

per person package: 1188 euros private Jeep Gorkha Machhikhola and back to Kathmandu also private Jeep.
Guide and porter service trekking : 788 euros and includes permit.
slightly expensive there are special permit needs more than 100 dollars.