[Question] How much should e-signatures have to cost a country?

19 bn$ for e-signatures for the Swiss administration?

My gut feeling is, LW is a fine place to ask this—keen to remove if instead it’s off topic.

I’m confused reading

The Swiss Confederation has bought a huge package of e-signatures for up to 17 billion Swiss francs.

This is for a 7-year period, with a total of some 120 million signatures & seals of various types (if I understand it correctly):

The basis for this is the calculated number of digital signatures. In the tender, 43 million qualified signatures, 43 million advanced signatures and 32 million electronic seals were calculated across all 3,000 or so points of need and over the entire duration of 7 years.

The article I have this from (German) (EN translation),discusses a few details, incl. difference seals vs. signatures. But I don’t fully understand it. In particular, I see nothing that provides me with a true grasp of why anything near 17 bn Swiss francs (19 bn USD) would be a plausible cost for that service for Switzerland’s government.

Does anyone have any understanding whether the order of magnitude of the cost really may be a plausibly reasonable upper bound, rather than simply an hugely overpriced service? If so, could you give your two cents? (pun unintended, but now that it’s here, the question may be rephrased: why does it, per signature, not have to be only 2 cents or so, but instead many francs?)

I guess mostly irrelevant background: Switzerland has around 9 million citizens.