If u planning to go via bike than it will cost u around 25k to 30k but if u take govt bus from delhi to manali than keylong and last leh than total cost and fare, food, accomodation everythibg is on u but in my case i took bike fro m leh to go different places around there and from delhi i took bus to leh and total cost in resoect to me was 21k total. bike with fule i drove more than 1000km bike and everything i stayed in tent and expore many places so i hope u shoul calculate overall ..and buddy it on u too if u minimise ur luxury u can save more then 2k ..or more
Stay: 700 per day per person
Bike rent: 1300 per (spilt by 2 if company is there)
Food: 500 (variable, depending on the person)
*all figures are approx depending on likes and preferences of a person. Else consider a rough figure of 2k to 2.5k per day per person including everything.