ad rate cards
spartanic,
1x, 3x, 6x, etc. represents the commitment you make. You don't have to pay in advance. An advertiser who commits to only one ad pays more than an advertiser who commits to running six ads.
Depending on your negotiating skills, you may want to ask the magazine to sell you 3x at the 12x rate. Make sense? That allows you to test the publication without making a long commitment.
Be careful not to judge too quickly - one ad isn't usually enough to test effectiveness.
Good luck, and write with any questions.
Travis Miller
http://www.scend.net
http://www.scend.net/blog