Wow! thank you for taking the time to both play the demo as well as send such amazing write-up!
1. Thank you for reporting on the bugs about the Collector and Upgrader; I'll look into that! as well as the bug with the Harvesters!
2. Regarding the economy, It is incomplete in the Web demo, due to the lack of items and mechanics in the demo, so a lot of the "quirks" are simply placeholders as you've correctly guessed. A very simple supply and demand economy as you've described is indeed in my "Nice to have", but I can't guarantee it at this stage of development; so I can't really promise much on that front...
3. and lastly, it was an oversight on my part that Disposable Biocells don't have their contents accounted for when being sold. To be honest, the Disposable Biocells were added last minute as a stop-gap; as I had an influx of new players complaining that the jump from Biocells to Carcass processing to be too drastic; so the Disposable Biocells acts as an introduction to Biomass mechanics (This is also why the exact contents of a Disposable Biocells can't be viewed; I forgot to add that functionality in).
Again, thank you so much for your comment!