I found this really informative post on how to make your own pocketfold invitations and I am definitely going to utilize it. For those of you who would like to make your on invitations, check it out:
http://amyandjoeysbigday.wordpress.com/2008/07/06/how-to-make-your-own-pocketfold-invitations/
Another place you can also try is www.cardsandpockets.com
their prices are very reasonable.
And I'm sure you have heard of envelopments.com. They have gorgeous invitations but are on the pricey side. You can see some pictures on their website:
http://www.envelopments.com/mixandmatch/featuredrecipe/list/whatsnew.aspx