After reading some of these threads, I'm so glad that I'm just a marble-nobody.
FWIW, I don't think newspapers are the way to reach people anymore. You need to advertise online, or in the online version of the newspapers. I say this because we recently put an ad in the local newspaper to rent a house, and got zero response. Then we put an ad in the same newspaper, but online, and were flooded with responses, and paid alot less for the ad too. It cost $60 for a 2-day, 3- or 4-line ad with no pictures, compared to $15 for a whole month, including five full-color, full-screen photos. (What is a marble ad without pictures of some real eye-catchers. If you're looking to get younger people interested in marbles, you will first have to show them what a marble can look like...some may not even know what a marble is!)