It really is a two person job. And I think you have to deal with phytosanitaries and I believe there is also a requirement to have a separate dedicated freezer to store the seeds.
You have to know how to categorize the seeds. Then there is the production of hard copies of the list and the production of the website with photos. Photos really sell the seeds. I doubt if any of my seeds sold as the photos I sent were never put on the site.
And then there is the cleaning of the seeds. I have heard that many, many lots are sent uncleaned. So then the seed chair(s) have to clean them.
The fact that no one holds the job for very long tells all.
I also suspect it is somewhat of a thankless job...