I made my own invitations, and I got SOOOO many compliments on them. No one even could tell I made them myself.
I bought plain ivory card stock invitations at Target that had a gold deckle edge. Then I went to a craft store and saw they offered vellum invitations with a gold ribbons to attach. I cut the vellum so it was slightly smaller than the card stock invitations from Target. On the Target invitations, I printed an outline of Cinderella's castle that I had traced myself and scanned on the computer. Then I printed the actual wording on the vellum. I attached it to the card stock, and voila! Gorgeous invitations that normally would have cost hundreds of dollars, for a FRACTION of that cost! They really were beautiful - the castle in the background, and the words on top. Never seen anything like it anywhere.