What is purism thought process for not selling spare parts?

My assumption has been that since there are no listed parts, they are simply not available. You’re telling me that this isn’t true … which is great news. So, supposing that someone had a Librem 13 with broken hinges/case, could they expect parts for that repair to be available at a reasonable price? Is the only way to find that out by emailing Purism support or are there 3rd party suppliers?