We're doing value proposition testing with a landing page. Our service, which isn't free will either be subscription based or commission but we haven't decided. If the landing page simply said:
1) "Interest in a seminar with your favorite expert? Sign up here…." – it could possibly garner interest, but people could assume it is free and give false positives.
"2) Interest in a seminar with your favorite expert? Check our pricing models below" – It's more blatant, but people that sign up would actually be willing to pay and a real indication of interest?