So I have some good news! All in all: My father can buy from Tradera when he's back home visiting Norway! Also I can buy from Norwegian/Swedish MLPArena users!
First is a bit of a story, so I found the website Tradera when looking for ponies and I'm like "Wow! So much good stuff!" Then I found finn.no and there's a lot less, but it's still good.
Browse the websites for a month before joining up, Tradera asks for my phone number for verification so I'm like yeah sure. Did it and found out later it had locked in my country and can't change it to ship to my grandma's place.
So I asked my dad and I showed him, he said it looked fine then I sent him some links and it turns out certain sellers will only sell to Swedish buyers or Nordic buyers. Only one out of 5 links allowed him to buy (because Nordic) but we ran into another problem.
They must have like a GPS thing that says what country your in because once he's in Norway, he'd be allowed to buy.
So now I just gotta wait until he's in Norway (he's gonna be there for like a month.) But I'd now be able to buy from Swedish/Norwegian users without costing 12 arms and a leg!