My lab used bottle caps with four holes in them for mobile phase intake. I’ve never seen a single bottle used for more than a couple HPLCs, but I suppose there are niche use cases out there.
In my case, I was already paying for this VPS to host other services, so the cost of adding peertube was essentially nothing. The server has enough storage and bandwidth to support dozens of users and hundreds videos, so the cost per person would be pretty low.
Peertube uses the torrent protocol to distribute the load among active viewers.
I found a $15/mo server with unlimited (10Gbps) bandwidth for my personal instance. It would only become expensive if were to open it up for public registrations and use a lot of cloud storage space. Anything I upload can theoretically be viewed a billion times at no extra cost.