fSG: do not underestimate the bravery of EFB providers to ask a price that sucks all of your savings into a vendor-lock, impossible to get out of, 5 year "industry standard" contract.
Also, paper charts with individual folders is a distributed system where an error of ommision / undertraining or even negligence would only invalidate a single-point enduser. Whereas an EFB data distribution is a highly centralised animal which requires rigorous standards of work and very high level of quality assurance.
The EFB integrated class 3 turned out to be a dead end, unfortunately.