Curious as to the motivation for this. I've never heard of this company, but the pricing page says the cheapest PG cluster is $6.88 per month. Is that enough to keep their target customers from using their service?

It's an attempt to reduce friction. Developers try services like ours out for fun before they use them in anger. Putting a price on the fun stuff keeps people from trying it. It's not that $6.88/mo is too much, it's that >$0/mo is too much for developers who are used to their side projects being subsidized by monopolies or VCs.

People spend a lot of money on infrastructure when they use it in anger. Free apps cost us ~$0.50/mo. If we can sift through 1,000 free users and find one who converts to $25k per month, we're delighted.

Does this ever happen? I was contacted by a F500 who needed some custom version of my open source project (https://github.com/mickael-kerjean/filestash). 25k sounds unreal but hey I have no experience in purchasing enterprise grade software and it's not simple to find actual figures so I was aiming at making an offer at 2.4k/month. Is it a rock bottom figure in enterprise grade software?