SDC.com is not a free service. It offers subscription packages that range from one month to an annual membership, with different levels of access and benefits for each package type. The basic monthly membership includes unlimited messaging, profile browsing, photo sharing and other features; while the more expensive packages offer additional perks such as video chat options or exclusive events invitations. Prices vary depending on which package you choose but all memberships come with a 30-day money back guarantee if you're not satisfied with your purchase so it's worth considering if you want to take advantage of the full SDC experience!