Currently, it costs $480 for the standard guide and 2 porters (who can carry 12.5 kgs each). Unless you want to pay extra you need to bring your own food and stove.
You are at altitude. I`d seriously recommend paying for an extra day to help you enjoy the circuit.
Its wild wild trekking so come prepared. And avoid the wetter seasons. Nowadays February seems the driest.
Bring decent waterproofs.
Bring/Hire a good sleeping bag. It gets cold higher up at night.
Bring strong plastic bags to protect things from the damp.
Bring well worn in waterproof walking boots.










