Edit: I moved this comment to the github thread.
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Their only objection (so far at least) is that they find "Name your own price" confusing. Do you want to go with their suggestion, I find it a bit misleading myself? Maybe instead suggest "Free, but donations welcomed"?
Edit: This is in the pull request, btw, not on your page.
That's for you to decide, of course, but I think you would.
What's the worst they could do, remove it again? Actually you have to send them a pull request for the edited .yml file, so they'll just not merge it if they don't want it on the page.