I like to invite those I'm playing with to come see what the hobby is all about. It's not so much the savings for them to get in, but a convenient way to tell what it's all about and give directions on how to get there. I come early to the Convention and play an several other clubs in town.

Even if they are just pocket sized cards, I'd like to see them available. If they also get the friend in free for a day, that's better yet. I'd buy a half dozen.