Arxiv hosting costs were posted elsewhere and are minimal. Less than the 30$ per published article that DA requires on top. From memory: <10$ per year per publi

Arxiv hosting costs were posted elsewhere and are minimal. Less than the 30$ per published article that DA requires on top. From memory: <10$ per year per published article. So we have roughly 1660$ unaccounted for for IEEE. PRX costs 4000$.