There is no need to transfer $$ from Nepal to USA , the money can be deposited in your account here in the USA as well as Nepali Rupees can be handed over to somebody in Nepal side by side,

I would like to know what would be the rate that you would be willing to pay for $1 US.

Maybe we can break this big money into many installments so that it wont draw attention from others and by doing so there will be trust in doing the transaction