LifeLock offers new customers a 30-day trial of its LifeLock Ultimate service for free via this link. (Click on "See Plans and Pricing" to see the discount.) Plus, if you decide to continue your membership, you'll receive 10% off the monthly or yearly rates, putting it at $22.50 or $247.50, respectively. Although that's not as strong as its 15% off discount two weeks ago, it's still one of the few discounts we've seen from LifeLock, which provides credit monitoring and identity theft prevention services.