Why are my Facebook Marketplace Listings different on desktop than mobile?

Question

Answer

Although we cannot give you the exact reason (hint, we don't write the Facebook algorithm) but here are a few things we know (or may have been told by the Facebook Marketplace Team).

Facebook Marketplace is currently in Beta, and not fully supported by Facebook
Facebook Marketplace is continuously testing new features
Facebook Marketplace may serve a unique experience based on each individual on each device