The hike to Everest Base Camp can be expensive if you include two flights, a porter, a guide, or other non-essential elements. But if you bus or jeep in, hike on your own, with buddies, or find someone in Kathmandu or a place like trekkingpartners then it can be quite a bit cheaper.
Here are all of my costs.
Sagamartha Permit 30
Jeep (to) 25
Jeep (from) 20
R Down sleeping bag .8 cents/day 17
R down jacket .6 cents/day 15
Socks x2 2.5
Tshirts x2 6
Water pills x100 5
Water Bottles x2 5
Snacks/drink mix,Tp, toothpaste 30
21 days food/accom/ 290
*This number skews high because of too much internet in Gokyo and a stupid night in Lukla.
TOTAL TOTAL 470
That comes out to about 22 dollars a day counting everything. Not bad when you see that companies charge thousands of dollars for much shorter hikes.
Stuff I already had:
polyprops top and bottom
zipoff pants that did not survive the trek
1 pair trekking socks that did not survive the trek
janky ass shoes that did not survive the trek