Our Save the Dates are here and I spent a portion of Sunday addressing them. I am pretty happy with how they turned out (sorry for the poor picture quality). We ended up using VistaPrints and I think the total cost is right around $50 including postage. Our engagement photos and the design were free and loving provided by one of our best men (you can see more cute pictures of us on his website). We ended up using a VistaPrint special for 100 FREE standard-sized postcards. Uploading, proofs, and shipping came to $26. Then, I spent another $27 on postcard stamps.
I think the quality is pretty good. There is a streak towards the right-hand side, but it isn't very obvious. The process was very easy--VistaPrints provides templates so you know what size to design your own postcard, then you just upload it. The only downside is all the spam that I get from them, but since we got a pretty good deal on our Save the Dates, I am not complaining.
Now, I just hope that the recipients enjoy them as much as we do :)
13 hours ago