What is the primary goal? To measure how many people are willing to provide a credit card? Probably something else, right? So what is the key metric? And have you made a back-of-the-envelope estimate on the tradeoff you're making towards the key metric?

Regarding credit cards – that's precisely our goal. To see how many people would be ready to pay (or provide a credit card at least). Of course, our product is not as developed as one would expect and we're going to see many cancellations. But it provides a useful data point for us nevertheless. Then we can act on the feedback and develop the product further to lower cancellation rate.