Our trip was back in 2004 when the DDs were aged 9, 6 and 2.
I don't recall the exact price now, but it was about £2k for us all for three nights at the Club Saariselka Hotel near Ivalo in the far north. We were booked with First Choice.
It was magical. Loved it. The hotel was nice, there was plenty to see and do (tobogganing, husky sled rides and more). The search for Father Christmas through snowy woods was lovely and captivated the kids.
Some people did go for the day, but personally I was glad we went for the longer break. DH even fitted in some skiing.