Let's do a little reality check here, I highly doubt you can buy traffic on Fiverr and have it convert on any ClickBank offer. Quality traffic is not acquired on Fiverr (that's for sure). Focus on building a value adding funnel like described in the post rather than looking for a shortcut. You can't just spend 5 bucks to make 40 in 5 minutes, I'd be a billionaire otherwise :).
As Todd Crawford of Impact Radius puts it: “Marketers will need to monitor their vendors and partners for compliance with the GDPR. Vetting relationships will be extremely important, as well as ensuring that each party and your company have the appropriate consents and disclosures concerning collection, tracking, and processing personal data of your customers. Intelligent tools will be key for monitoring the types and treatment of covered data. As 2018 nears, it is essential to ask your vendors and partners whether they are or will be compliant by the May deadline, and to provide supporting details concerning their compliance efforts.”
In the case of cost per mille/click, the publisher is not concerned about whether a visitor is a member of the audience that the advertiser tries to attract and is able to convert, because at this point the publisher has already earned his commission. This leaves the greater, and, in case of cost per mille, the full risk and loss (if the visitor cannot be converted) to the advertiser.
Affiliate marketing is also called "performance marketing", in reference to how sales employees are typically being compensated. Such employees are typically paid a commission for each sale they close, and sometimes are paid performance incentives for exceeding objectives. Affiliates are not employed by the advertiser whose products or services they promote, but the compensation models applied to affiliate marketing are very similar to the ones used for people in the advertisers' internal sales department.