In reply to Pj Laverick:
I'm not sure why you would need one? It's a day and a half walk in which you need to do to getting used to the altitude any way.
If you are just doing the normal route how much kit will you need?
You can pay for a taxi up to the famous church which curs off a far bit of vert.
There are some local outfitters in town who.lught be able to help if you really can't be bothered but it's certainly not the culture