I'm trying to offer Free shipping to my interested buyers, but "revising" my already active post doesn't allow me to change shipping. I assume there's some way to change it, by I can't figure it out. Please explain it to me. Thanks!

How can I change the shipping option after I've published my listing? | Ask a Mentor

How can I change the shipping option after I've published my listing? | Ask a Mentor | eBay Community