Live · OfferUp radar
OfferUp alerts for new listings.
GrailHound keeps a constant watch on OfferUp in the US metros you pick and alerts you when a new listing matches your keywords.
Available on the web
·
and in your app store
24/7
Monitoring
50+
Marketplaces
$0
Free to start
GRAILHOUND
LIVE · 18 MARKETPLACES
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What sells on OfferUp?
OfferUp is a US app for buying and selling with people nearby. Vintage and collectibles topped US shoppers' secondhand holiday lists in 2025, ahead of clothing and toys.
Does OfferUp notify you of new listings?
Yes. Set a search alert and OfferUp notifies you whenever a matching item is posted.
The honest answer
Are OfferUp alerts reliable?
Good enough for a casual search. Bargains tend to be claimed before the alert lands.
Under a minute, start to finish
How to set up OfferUp alerts with GrailHound.
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jordan 1 chicago
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Over 100,000 eBay sales benchmarked
How fast do collectibles sell?
We benchmarked over 100,000 eBay sales in more than 50 collecting-related categories. The data is clear: 3% of collectibles sell within an hour of going live, and the hottest ones sell in under a minute.
See the full ranking
Sold within the first minute
0.7 per 1,000 70 sales
Sold within 5 minutes
4.1 per 1,000 422 sales
Sold within 30 minutes
20 per 1,000 2,085 sales
Sold within the first hour
33 per 1,000 3,389 sales
Hottest categories · Sold within 30 minutes
- Pokémon video games61 per 1,000
- Lighters60 per 1,000
- Fountain pens54 per 1,000
- Vintage Nintendo42 per 1,000
FAQ
Frequently asked by fellow collectors.
01 Why does my OfferUp alert show other items?
Matching is broad on purpose. An alert for an iPhone 15 also brings in other iPhones and accessories.
02 Does OfferUp still offer shipping?
No. Since October 2025, every sale is a local pickup.
03 What is GrailHound?
GrailHound is a marketplace alert tool for collectors and resellers. You set up trackers for keywords and we alert you when they show up on one of your marketplaces. Our goal is to make sure that you are the first to the listing.
04 Why would I use GrailHound versus searching directly?
Hidden gems surface when you least expect them, and no one can search every marketplace all day. GrailHound keeps a constant watch, so you save the time and still catch your grails.
05 How often do you search?
The free plan searches up to 3 marketplaces every 30 minutes. Paid plans go up to 10 marketplaces and can scan every 2 minutes.
06 How are alerts sent?
Email, push notifications from the GrailHound app, or notifications in your browser. There are also webhooks for more technical use cases.
07 Am I notified of every single new listing?
Yes, if you want to be. You can also filter: set a price range, include or exclude keywords, or write an AI prompt that checks each listing before the alert goes out.
08 Do you buy or bid for me?
No. GrailHound is a monitoring and alerting tool.
One tracker, every venue
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Your first tracker is free. No card required.