If I understand your objection, I don't think it is a problem. Wouldn't the preview et. al. be on the web page with the sales pitch? Only after the user was s

If I understand your objection, I don't think it is a problem. Wouldn't the preview et. al. be on the web page with the sales pitch? Only after the user was satisfied with what was being offered on that page, would the user request (and then pay) for the link.