I chose the "slow" shipping selection (which wasn't all that slow) and paid just a few bucks for shipping.
Today the free cards arrived in the mail. They are about standard size. The font is a little small, but the funky flower design (see below) is charming. The quality of the paper isn't bad. I also received a '25% off my next order' coupon.
Now the next time someone asks me for a business card - voilà!