The 12-month packages drop the monthly member rate down to $80/month for a Standard Package ad, $120/month for a Gold Package ad, and $160/month for a Platinum Package ad, a 64% discount over the one-month member rate.
Although MANA ads are not cancellable, they are changeable for the entire period the ad runs. So if you find the line you need for one hole in your line card, you can completely rewrite the ad to cover a different hole in your line card. No matter how long the ad you buy runs, your ad is like renting a billboard to speak to principals for the whole time that ad runs. And you can log on and take complete control over that billboard's message at any point while that ad is running.