The average CPC (Cost Per Click) for VPN display ads can really vary depending on the niche, targeting method, and the ad network you're using. But to give you a rough idea:

On bigger ad platforms like Google Display Network, VPN-related keywords (especially in tech, cybersecurity, or streaming niches) can be pretty expensive — often ranging from $1 to $5+ per click, sometimes even higher for competitive terms.

On smaller or niche ad networks, CPCs are usually much lower. For example, I’ve seen VPN-related display traffic on 7Search PPC go for as low as $0.05 to $0.30 per click, depending on how specific your targeting is. It's definitely more affordable if you're on a tight budget or just testing the waters.

Keep in mind, though — it’s not just about getting cheap clicks. The real value is in click quality and how well your landing page converts. Sometimes paying a bit more for better targeting can actually save money in the long run.

If you’re just starting out, I’d suggest running a small test budget on a lower-CPC platform, then scaling up based on the results.