Hej!
As far as I can understand your question you are asking about a pickup, right?
I got mine imported and registered in june/july, registreringsafgift was 0,- and vægtafgift is 785.- pr. year on yellow plates..
I don't know what the price would be on white plates, but I think it would cost more, people with busses pays somewhere between 3-4-5-6-7000 as far as I've been told..
I was told that you could nedveje "downsize??" the registered max weight so that you would go under 2000kg, then vægtafgift would be 453,- (mine is registered for 2170kg. in total, won't be carrying that much cargo..)
It's 25% of the figures in "Varebiler og mindre lastbiler
(indreg. før 25. april 2007)"
http://www.fdm.dk/public/biler/okonomi/afgift/vagtafgift.htm
By the way it's a '68 bay, don't know if the price is different for a split but I don't think so..