Heinnies prices for some things are a bit steep. Not sure how competitive they are for this. Ragweed's forge used to have good prices on Helle but you might get stung for customs and tax. A German site Toolbox also sell them.
Helle sometimes come up on evilbay. There's a barely used eggen on just now.
Attleborough accessories in Norfolk sometimes have Scandinavian knives.
Finally, you can often examine various knives at the Game Fairs. The Scottish Game Fair at Scone is only 2 weeks away. In previous years there has been a dealer (Moonraker?) there and I think they had both Helle and EKA but I could be wrong. I've also seen Gransfors axes for sale.
Helle sometimes come up on evilbay. There's a barely used eggen on just now.
Attleborough accessories in Norfolk sometimes have Scandinavian knives.
Finally, you can often examine various knives at the Game Fairs. The Scottish Game Fair at Scone is only 2 weeks away. In previous years there has been a dealer (Moonraker?) there and I think they had both Helle and EKA but I could be wrong. I've also seen Gransfors axes for sale.