Wait until you try it with a bit of butter then! I think the protein-to-price ratio makes sense when you compare it to similar products like beef jerky or pepperoni sticks. I'd bet hardfiskur is a lot healthier than jerky and deli meat though, since at the least it has much less salt.
With high-quality nutrient-dense foods I get satisfied and full easily; but when shopping, I often forget to consider this when looking at prices. Thanks for reminding me.
It is wonderful with a bit of butter - but someone needs to tell the Icelanders that! Watching them eat it, it's a true exercise in restraint not to ask if they want some fish to go with their butter. I know it's traditional and all, but I don't understand how they can even taste the fish.