Pretending to take payment information is out what playbook? Selling things that don't exist is common or selling things that don't exist yet is common but pretending to take payment is weird. In fact, I'd burn that card.

I checked and they don't validate card information, which is at least something. I didn't bother to look at what the site is doing because if the fake info I put in was flagged, I would have already known. I assume they're collecting and storing contact info.