In response to this question about JOE from a few months ago, as well as the comment regarding whether to apply to job postings...
It's not clear whether the AEA's pricing maximizes its profit, but it certainly generates a large profit: for the year ended December 31, 2019, the AEA reports revenue from JOE of about $1.2m and costs of about $230,000. (See page 4 of the report linked from https://www.aeaweb.org/about-aea/financial-statements.
) EconJobMarket, a nonprofit, sets prices to just cover its costs (and has a tier of ads that are free).
Some recruiters post their ads only on JOE, others post only on EJM (and/or other sites such as the Chronicle), and many post on multiple sites. You’re putting yourself at a disadvantage if you don’t post your ads on EJM, since it can do nothing but increase exposure to prospective candidates.
It’s crazy to suggest that a candidate should not apply for a position that hasn’t been posted on JOE, unless the objective is to end the job-market season with no job.