Rev,
You have got to take a close look at Kellam.
I have their KPR4 Puuko as well, it is very well made and finished. Good value for the money and it is polished carbon steel. However, I believe that this is an Americanised puuko, with the addition of the slight finger notch and the more ergonomic handle.
The same goes for the Wolverine, which is differentially hardened.
If you want a really cheap beater, look at their S Line. I have one in stainless, it is my absolute household beater and has held up to everything that I have thrown at it. I sharpened mine the traditional way, ie. by laying the entire bevel flat on the stone, and it takes a great edge. It is really good value but you must accept that the finish is commensurate with the price. Mine has a moulded plastic handle and there is a slight gap where the blade enters the handle but the gap does not go very deep and the blade is locked in solid.
But I must say that the Iisakis have an appeal of their own. This is really a rustic, bare basic Lapp puuko. If this is what you want, go for it, you will not be disappointed. You can just imagine the thousands of Finnish hunters and outdoorsmen over more than a century who used knives just like the one that you have in your hand.
But remember that the Iisaki Lapp puukos are designed for draw cuts. The swell at the pommel keeps the knife secure in your hand while draw cutting and there is absolutely no finger guard of any sort.
You will have to check with Kellam if they have a polished carbon Iisaki. Harriet is great to deal with.
Helles are Norwegian, so they are not your Finnish puukos even though you can see similarities in the designs. However, Helle designs to me appear to have been modernised. They are very good looking.
So there you have Americanised puukos, the traditional Lapp puukos, Norwegian puuko-like knives, Swedish puuko-like knives, get whichever appeals to you most.
The similarity shared by knife buying and women is that the fun is in the chase. So have fun.
Do let us know what you decide on and your reasons. That would enrich us all.