Ragnar of Ragweed Forge has an excellent selection, by country and company of origin, and a lot of other Scandinavian material as well -- jewelry and runes and history. Good background. Great prices.
Coincidentally, I was looking through
http://www.kellamknives.com again last night, and they carry a few lines, including their own and other Finnish companies also found on Ragweed Forge. Kellam also has ethnic items and jewelry, including some beautiful miniature knives.
To oversimplify, the prototypical Scandinavian knife has a straight back, curved edge, saber grind with no secondary bevel, and a barrel handle. The modifications are mostly in blade edge and handle. The Finnish version is known as a puukko. The large Lapp version is a leuku. (Finn is Suomi, Lapp is Sami.)
The Swedes have good, simple versions of this kind of knife, many very inexpensive! but excellent, durable working knives: the Mora models. I like the Helle knives from Norway myself, but the only one I own now is a Nying, small thick sharp blade, strange thick handle that feels good in any grip. Ideal utility knife.
So, golok, after running through everything I know

I went back to your original question: what should you start with and keep it affordable. Gotta go for the Mora style. Here's a few references to similar products with reasonable prices:
The Mora knife by Eriksson from Ragweed Forge
KELLAM S-LINE KNIVES -- click on Knife Shop, Fixed-Blade Knives, Other Lines, S-Line. (I think I'll be getting the S2 and S5 for my daughter.)
Smoky Mountain Knife Works Search on "Frosts" for a range of plastic handled Mora style knives. (These are the ones my daughter likes now. Simple, sharp, durable -- in carefree stainless. She is not a knife knut!)