Don't have an answer for you on that one..but i'll bump you up!
I was looking into Impressions to do our invitations, but I found their prices to be very expensive for me anyway. Not sure how their save the dates are. If you go on their website, and find the email link..write her a quick email. She responded to me very quickly.
i ordered save the date magnets from stuffwithnames.com on sale, the rose pattern ones. another great place to buy these are vistaprint.com you can even upload your own picture or clipart for the magnet.