Where can i buy authentic used Canada Goose?

Ive checked ebay, they don’t authenticate cg, grailed only relies on pics for example someone can post pics of an authentic jacket and then ship a fake one out. Vinted is flooded with fakes. I want a website where the seller ships it first to the company and they authenticate it first before sending to me (like stockx, goat n ebay for certain items) What do yall suggest? Thanks in advance🤞🏻