Adobe has updated their $10/month Photographer Creative Cloud Contract Offer again. As of the time of writing, the offer is open again to everyone. You don't need to own a previous version of CS to qualify. This sign-up offer is good until 3/31/14 or earlier if they change it. Thanks to Ron for the alert in the comments of the previous post on this offer.
Be sure to check the FAQ and Terms if you are not familiar with this offer. You agree to a 12-month contract to pay $10/month for a subscription to the Lightroom 5 and Photoshop CC software. You own nothing. You don't have to own any previous versions of CS/PS/LR during this promotion to qualify for the offer. After the 12 months are over, this will auto-renew (unless you cancel) at the then going prices. Check the aforelinked page for all the terms/conditions/details.