It's the best product on the market for upsizing images.. but - as with most things - it is expensive. I use this for images that clients send to me for publishing books.. typically, they might have photos taken in 1940 that they want included in a book and I need to upsize them to add them to a 8x10 front cover, etc... Amazing product!

http://www.ononesoftware.com/detail.php?prodLine_id=7