Prima seems to only manufacture so much of a particular item. After doing a search on this website, the some of the flowers are available on scrapbook.com. However, it appears most the paper has been discontinued here at scrapbook.com.
You might want to try googling it, to see if its still available anywhere on the web. Or check out the latest Prima Christmas collection, Sweet Peppermint.
Victorian Christmas paper was a very pretty collection though. Sorry to see it go.