Jeff, I second Ali's comment. Neofarm is great! I visited their nursery with the owners, Khun Nong and his son K. Sak, earlier this year and had a great time. I picked out plants and they mailed them to me with no problems, even adding a couple "bonus" plants. There's a link to an "English" page and articles on the homepage...their articles on Vikings are some of the only material available on the species and worth reading!
I've got a few hundred Viking seedlings going, but they will be tiny for some time to come and they are just for my own projects, not for sale. There are a few other sellers, mostly in Bangkok. Here's a link to a Thai forum which won't help you much unless you can read Thai script, but just below the masthead are a line of links (starting with "MainPage", "FAQ", etc.) there's about 6 links to Thai sellers there. I "think" Fausi had some Vikings last time I looked at his site, but not sure.
Good luck!
Shawn
PS my miranda's are also in partial shade but pitcher freely year round... I do keep them quite wet. I was just reading an article somewhere on
http://lhnn.proboards107.com/index.cgi discussing N. miranda and the need for a very 'open' media. Mine are in coco fiber, which with all the water is probably getting pretty no-airated but they seem to be doing great anyway! I'll try to shoot a couple pictures soon.