Quite frankly, this is not gonna work. I manage a system with a very write-heavy workload (lots of small writes) and even though our writes far outpace our reads, this pricing makes your system about ten times more expensive than an RDS cluster.
There's no data about performance. There's no information on how or whether data is persisted to durable storage before a write is acknowledged. There's not even any information on how big keys or values can be. There's no public information on support.
When choosing a system like yours, my priorities are:
1. Data safety
2. Performance
3. Cost
... In that order. You've done nothing to educate me on 1 and 2 and your pricing isn't better than what you're seeking to displace.
When your product is a tool for developers, show up with hard facts about your product. Zero people (as you've seen) are even remotely interested in building a product on top of a system without knowing whether the system will hold up to their use case. And other than a very anemic FAQ section, you have no documentation at all, whatsoever.