I haven't seen flux and a few other things before, but it sounds really exciting. It looks like influx people release a lot of this info (and related tech like grafana) on their YouTube channel: https://www.youtube.com/channel/UCnrgOD6G0y0_rcubQuICpTQ
Our current cloud offering has much smaller initial pricing. Our Cloud 2.0 offering that we'll launch later this year will have usage based pricing as well as a free tier.
Good content, it's a shame it's not more popular.