When Apple made their new Cards app available last week, I went ahead a cooked up a quick test card and sent it to my younger siblings. The whole process is extremely easy, and it shipped in no time. And the day it was to be delivered, sure enough my iPhone popped a notification letting me know.
The entire shipping time was about two days, and here's the result. The picture are a little crappy because they were taken in low light, but you can tell that the cards are nice while still being very inexpensive. And you can't beat custom-made, personalized cards conveniently shipped for you for only $3 bucks.