I am going to SE Asia 2/14/17. Finding info for visas has been difficult. Sites don't show total costs. And types of visas aren't explained very well. I finally found a good link. See below: http://www.vietnam-immigration.net/...-visa-on-arrival-vietnam-loose-leaf-visa.html The Visa On Arrival is the cheapest. The only negative I see is, at the airport (and you must fly into one of the 3 accepted airports) you must find the counter that takes your official papers and converts to a visa. This line could be long or short. Then you must get into the immigration's line and get your stamp. I think you also need to have a second application form to give them. Or you will waste more time filling it out and getting in the line again. You must also pay the "stamping fee." This is paid in cash. It is accepted in USD. Vietnam money is accepted. But you wouldn't want to mess with exchange rate fluctuations. The loose leaf visa will bypass the above line. It is an official piece of paper (loose leaf) that gives permission to immigration to stamp your passport. I think Vietnam is the only country to use this type of visa. You must keep it in your passport. I think it must be returned when you leave the country. The stamping fee is prepaid. You can enter Vietnam at any port. Not just the 3 approved airports. The full visa through the embassy is much more expensive. And I don't see much advantage using it, other than avoiding the above mentioned extra counter visit and not loosing the loose leaf paper. I hope I have all this correct. And I hope it helps other inmates in search.