Keep checking the tickets on your own too. One thing I've seen most often from the travel agents is they normally look for tickets with middle eastern airlines, and most often than not there will be around 10hrs of transit somewhere in the middle east.

I just did a quick check for May07/08 to Jun 07/08. Singapore Airlines is offering 1704 for round trip from Houston There will be 4 and 6hrs transit in Singapore during fly in and out. Thai is offering 1668 roundtrip from Los Angeles but there is 4 and 10hrs transit in Bangkok during fly in and out.

Also looking at your profile, it says you are from Alabama. So I did a quick search from Birmingham, AL with multiple Airlines (Continental and Qatar during fly in and Etihad and Continental during fly out), and found the cheapest ticket for 1916. It is Birmingham - Houston - London - Doha - Kathmandu with 4:25 transit in Houston (you'll need it for international flight check it) and 5:30 transit in London and around 90mins elsewhere. Return is Kathmandu - Abu Dhabi - London - Houton - Birmingham with less than 2hrs transit everywhere.

If I were you, I would rather pay a hundred or two dollars more to avoid 10hrs transit.