Digital Ocean referral program gives a nice amount ($25) for every referral you bring them. But you will perceive those bucks, only once you referred has spent at least $25 in Digital Ocean.
Pipedrive’s pricing page features geo-targeted testimonials. I was in Australia recently and the testimonials shown were all from Australian companies. It is a minor hack but increases the chances I will know the person providing the testimonial and increases my trust in their brand.
OKCupid triggers an time-limited offer when you try to downgrade your plan.
Booking does a great trick using notifications. Even if you are not a member of their platform, they mimic the notifications a user might receive if he’s logged in his account. First impulse when seeing that you have a notification? Click on it. They take advantage of this fake notification, to encourage you to signup for ‘exclusive member deals’.