Observed arrival · 2026-09-10
Offergeist: A Verdict for Facebook Marketplace Deals
A proposed Chrome extension that compares Facebook Marketplace listings with prices elsewhere and labels them good deal, fair price, overpriced, or likely scam.
Why it surfaced
Offergeist turns the used-goods browsing ritual into a four-way decision: buy, negotiate, keep scrolling, or investigate. Its examples include a MacBook, a coffee table, a signed football helmet, and an Airstream whose suspiciously low price is paired with a newly created seller account and a duplicate image.
A proposed Chrome extension that compares Facebook Marketplace listings with prices elsewhere and labels them good deal, fair price, overpriced, or likely scam.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue