There's a promo for a free month of Marvel Unlimited on now.
Fine print: *Offer valid 4/15/14 12:01 AM EST to 5/5/15 11:59 PM EST. Offer available only for new and former (now-cancelled) Marvel Unlimited members. Valid only on monthly Marvel Unlimited subscriptions only. Valid payment card required to redeem offer. Subsequent months billed at then-current monthly subscription fee (currently $9.99/month) unless and until cancelled. Cancel anytime through My Account following registration. Auto-renewal and other terms and conditions apply; please see Marvel Unlimited Terms of Use for terms and Marvel.com/Unlimited for further details.