I had an Asian Treking catalogue about 5-6 years ago. At the time the Everest trip was around 18,000 $. Which was a bargain at the time. There was a long list of items they were not responsible for I believe. I remember emailing them a couple of times for info on subsequent catalogues.
Never used them so I cannot vouch for them.
Cheers William

Dan Mazur and Phil Crampton are quite well respected in the Everest community and I have met Phil Crampton in China and Nepal. It was summitclimb that helped the stricken Lincoln Hall down the hill last year. Be aware that the basic cost is umm very basic. no sherpa support, cooks, oxygen etc.