Out of interest, how often do you actually use the books? I've a cupboard full of books, taking up space I'm desperate for, yet I'm reluctant to get rid of them because they've information I might some day use or need (when in reality they're rarely opened and only for brief entertainment value). The amount of them is such a hassle to deal with, not to mention the dust.
I've been missing them a lot. They represent the reading I did, personal and professional, throughout two degrees and my first two jobs. Some of it is reading for pleasure, but there's also about a decade of research in there on topics which are still relevant to me. A good few times I've went to my shelf to look for a book only to remember it's back in the UK. Not to mention I've annotated a lot of it with my own notes and other marginalia.
If it were reading-as-entertainment, I probably wouldn't go back to them as much, but it's quite a bit more than that to me.
They'll be going to the Nordics. I'd probably be willing to go up to pay a few hundred quid if it meant having access to my whole collection in one go, but I thought there was no harm in asking, just in case there was a smarter way. Even though I specify books, I imagine there must be services for getting heavy boxes of stuff across borders.
I have a baseline quote to work from. If I do have 120kg of books, I can split that into 6 boxes of 50 books, weighing about 20kg. A 20kg parcel is just under 50EUR. Basically I'm looking at 300EUR or less than a quid per book, which I'm guessing is probably about the best I can hope for.
An economy parcel service is going to be your cheapest option. 120kg of books isn't really enough to justify a pallet - you'll be paying for the awkwardness of moving around a full pallet, without the economies of scale of actually filling it.
I would suggest using an agent like mybaggage or sendmybag that specialises in transporting personal effects. You can move your own belongings across borders without paying duty or VAT, but you could get a nasty surprise bill if you or the agent cock up the customs declaration.
