I looked into Kinkos... here's the details.
Outside of card:
These are the card designs I will take to Kinkos.
The cost would be:
-Pack of 25 5x7 cards with envelopes for $40-
-10 for $15 (cards and env)
-5 for $10 (cards and env)
Let me know in comments if you're interested, they're pretty quick, often same day printing. I can probably wait until Monday to take them after I see how much interest it sparks.
I noticed others on this list doing cute little designs, or even photos for cards and thought I'd pass this link on-they take submissions for freelance designs on their cards : http://www.recycledpapergreetings.com/default.htm