I am not an expert but, for what i know,i think data transfer is not such a huge price to pay
It should be,lol. You are selling personal data, which cannot be obtained so easily,only if someone is sharing their personal life experiences.
In order for someone to sell something valuable, it has to be personal, hence the payment should be a bit higher when you are dealing with personal information. I think this " branch " is not capable to raise their costs in order for the information to be higher also. Too many are selling information,it's not so easy to keep a price at a high rate.