You can register, create a profile, and send winks and reply to messages all on a free account - with no obligation to upgrade or even to choose a three-day trial at just $0.99 per day!
However, if you do choose to upgrade, you get access to:
Unrestricted private chats.
Larger photos for a better view.
The extra 'Looking For' box on your profile.
More detailed search options.
Premium customer support services.
The added functionality to send photos and videos through a private chat.
You can also choose to upgrade your account for a limited time if you want to test out a premium subscription but aren't sure whether you need the advanced functionality.
Memberships start from a three-day trial up to a three-month renewing subscription.