I went to an auction this morning because they had several sewing machines. I bid on a Viking Interlude 445. The winning bid was $200, and I would have had to go to $225. The machine was used very little, and was well worth more than $200, but I just didn't want to go higher. I have a Viking Lily 545 which has been a wonderful machine; just wanted the other one as a backup.
I did end up bidding on and buying an old Singer with the wooden round top case. Very nice machine in great condition.