Sometimes you get more players by not charging for a tournament. Apart from the Charity events i didn't charge for any tournaments last year and i think it increased turnout, especially for the novice to intermediate players. That way if it's unlimited entry in qualifying everyone has the same chance and the only metric is how much time your willing to put in. I will run some tournaments this year where i'll have an entry fee as i think a mix is probably best. We had a local beer distributer sponser an event and there was some nice swag there.