Selling your personal data is too risky for a small amount of money, you might not see the effect of that but eventually if something bad happen, youll regret it. Big companies sold our datas with corresponding regulations, so Im confident that Im still secured not unless I decided to sold my identities. Dont change your security for a small price.
Once you decide to sale to one company you don't know what these guys can do with it and I wouldn't trust them with personal information which could be passed on to other companies in need of this same information without our permission even with non disclosure terms....because we know this is all for show but behind the scene it's a different story.