The pay is in Nepalese Rupee, and averages out at US$ 200 per working day made up of basic salary and flight pay. Roster is 6 days a week, 48 weeks a year, with one return ticket home each year. Annual leave during the quiet periods.
Nepal is a poor country so the pay is commensurate with that. There's only one level of ex-pat experience accepted, so you could say pay is commensurate with experience...
The scenery might well be spectacular, but IMHO the overall remuneration package is nowhere near enough in today's conditions in Kathmandu with potential disease, poor living conditions and earthquake uncertainty!