This would depend on the exact wording of the contract for the ‘official’ distribution/repair service in the country in question.
Without seeing that contract - which in the UK at least would be covered by the Official Secrets Act as a ‘Commercial Secret’ - we cannot say for certain what terms and conditions it specifies, and/or how it splits costs/responsibilities between the manufacturer and the repairer.
One might expect that, for any repairs to pens that are still under warranty, Pelikan would contract to provide the repair-contract holder with all the necessary parts at no cost to the repairer.
One might also expect that Pelikan would also agree to provide parts to the repairer for out-of-warranty repairs at a favourable price. But they wouldn’t have to.
Indeed, one could imagine a situation in which the Executives employed by Pelikan chose to adopt a very aggressive attitude during contract negotiations, and told the repair company something such as ‘How dare you claim that we don’t make a high-quality product! Obviously the purchaser has broken the pen! You will undertake to buy all replacement parts at retail prices! To ask for anything else would be an insult to this company!’.
If that were the case, one might also imagine that the repair company might then simply refuse to perform any repairs on out-of-warranty pens.
But then, of course, that scenario is merely my own flight-of-fancy….