Facebook Marketplace → eBay Arbitrage

Find underpriced listings.
Flip them
for profit.

Marblr scans Facebook Marketplace in your city every hour and surfaces items priced 60% or more below their eBay comp value — then writes the eBay listing for you, photos included.

60%
Below eBay comp
alert threshold
Vintage Canon AE-1−74%
KitchenAid Mixer 5qt−67%
Nintendo Switch OLED−61%
· Live alerts ·
Every Hour
Marketplace scans
60%+
Min spread to alert
Instant
eBay listing ready
How it works

Built for serious flippers

Hourly Marketplace Scans

Marblr continuously scrapes Facebook Marketplace in your city, so you catch deals the moment they're posted — before anyone else.

60%+ Below eBay Comp Alerts

Every listing is cross-referenced against live eBay sold data. You only get notified when the spread is big enough to make a real profit.

Auto-Generated eBay Listings

Tap an alert and Marblr writes the full eBay listing — optimized title, description, category, and pricing — in seconds.

Instant Photo Import & Publish

Marketplace photos are imported automatically. One tap and your listing goes live on eBay — item purchased, listed, done.

The flip loop

From alert to listed in minutes

01
Marblr scans
Marketplace listings in your city, every hour
02
Alert fires
You get notified when spread exceeds 60% vs eBay comps
03
Listing drafted
Full eBay listing auto-generated — title, price, description
04
You publish
One tap to push live on eBay with all photos imported
Limited early access

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