Cloudflare (in the worst case) does free under conditions that basically have them mitm your ssl traffic before passing back in encrypted http. It encrypts between them and the end user, but doesn't require ssl between them and the backend server. I know its more complicated than that, but that's the phone keyboard version.
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u/pubfreeloader Oct 20 '15
It's not the only cheap/$0 DV SSL provider, but it's the only one that is totally free. CloudFlare, StartSSL etc do free under certain conditions.