Why the best deals are gone in minutes (and how to be first)

Anyone who has flipped for a while has a story about a deal that was gone before they finished typing “is this still available.” It isn't bad luck. Underpriced listings follow a predictable pattern, and once you see the pattern you can beat it.

What happens in the first 30 minutes

A seller posts an RTX 3080 for $250 because they want it gone this weekend. Within minutes it's in front of thousands of people who browse Marketplace all day. The seller's inbox fills up. They answer the first two or three messages that sound serious, agree to a time with one of them, and stop reading the rest. If you messaged at minute 25, you were never in the running.

The seven-minute window

Here's the part most people don't know. When someone posts a new listing, Facebook holds it for a review period, usually around seven minutes, before anyone else can see it. During that window the listing exists but is invisible. The moment it clears review, the clock starts for everyone at once.

That's why a SnagSonar alert often says “posted 7 minutes ago.” The listing wasn't sitting there for seven minutes; it just became visible, and you're seeing it in the first few seconds of its public life.

Why checking manually can't keep up

If you refresh Marketplace every 10 minutes, the average deal has been public for 5 minutes by the time you see it, and that's if you were looking at the right category with the right filters. SnagSonar checks each of your searches as often as every 15 seconds, around the clock, so the gap between a listing going public and your phone buzzing is seconds, not minutes.

What to do in your first 60 seconds

1. Open the alert. Look at the price, the typical local price, and the distance. Decide in ten seconds whether it's worth it.
2. Send a specific message. Not “is this available?” Say what you'll pay and when you can come: “Hi! I'll take the 3080 for $250 if it's still available, I can pick up today after 5.” SnagSonar's one-tap templates do this for you.
3. Don't negotiate yet. If it's already a deal, lowballing just hands it to the next person. Negotiate in person if the item has a problem.
4. Be ready to move. Have cash or a payment app set up and a rough idea of when you're free today.

Tune your speed to the category

Not everything needs 15-second checks. Graphics cards, consoles and iPhones do; furniture and tools usually don't. In SnagSonar each search has its own speed, from 15 seconds to 5 minutes, and a loud alarm option for the searches you really can't miss. Put the fast speed on your money-makers and let the rest check every few minutes.

Let price drops work for you

Deals aren't only new listings. A seller who posted a fair-priced sofa three weeks ago and just knocked $150 off is tired of waiting, and most buyers won't see the change because the listing isn't new. SnagSonar watches for price drops on listings that matched you and pings you when they happen.