elements.heroku.com
In short: Getting listed on Heroku Elements Marketplace is unpriced — no fee is published either way. Plan for about 45 minutes — there is material to prepare and a review to wait on.
What they ask for: Build a real Heroku add-on or qualifying open-source buildpack and progress it through the partner release stages.
Build a real Heroku add-on or qualifying open-source buildpack and progress it through the partner release stages.
Add-ons need HTTPS and JSON integration, testing, support and alpha-to-beta review; promotional-only entries do not qualify.
Open the submission page on elements.heroku.com and complete its form — that is the "Open submit page" link at the top of this page.
Add-ons need HTTPS and JSON integration, testing, support and alpha-to-beta review; promotional-only entries do not qualify.
Priority sets the band — this one is medium. Cost (not stated) and effort (moderate) move it within that band, which puts it in the useful tier. The score orders a submission queue. It is not a measure of the site’s domain authority, traffic or quality.