Some agencies have nearly the same prices. The most spoken on this site are often from people who also use this site and directly or indirectly advert for their business.
For places to stay you can also use the search option on this site. Comparing to the rest of China prices for accommodation in Tibet are high and quality is low. Food is the same problem.
The accommodation at EBC base camp is in big tents that are used as restaurant during daytime where you can buy a sleeping place for the night. The toilets are far from the tents, very dirty and it's very cold specially in the night if you need to go out to use the toilet.
