OK, so here's my idea for you...i see you just posted yours again. This is just what I whipped up really quick.
I love the MPIX metallic paper and I think it makes a dramatic effect for a small price. You could have these printed on metallic paper for 56 cents each. Then, make the borders large enough that you could cut out and affix to cardstock, leaving a border around the edge- whatever your accent color is.
Then, print something on a belly band and put it around the whole thing. I'm sure it would be like 75 cents each for the whole thing. You could even print on vellum, or just put a band of vellum around the card with nothing on it- vellum just looks dramatic. Personally, I'd leave the website off the bottom if this is a formal invitation.
I love the dr suess quote btw- that's one of my favorites.