I would be careful about sharing such business idea in public. What if someone thinks it's a great idea before you make up your mind and runs with the business? In which case even if you had a million dollar idea you would be left with nothing.

Having said that, I think it's not a bad idea specially when you think of the families that are left in Nepal after all the workers leave for abroad. Families might be having a difficult time making purchases even their daily essentials so if there is a service that does it for them, it might be desirable. But who knows?? It will all depend on marketing.