SWEEPING
DealSonar
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NewVinted, eBay and OfferUp monitors are now live›

Find the best local deals before anyone else.

DealSonar sends Facebook Marketplace alerts the moment a listing matches your search, and monitors Vinted, eBay, and OfferUp the same way. Phones, laptops, consoles, trainers, vintage gear, whatever you flip. No more refreshing listings all day.

Start free trialWEB DASHBOARD · DESKTOP + MOBILE BROWSER · NO APP DOWNLOAD
app.dealsonar.io
DealSonar
DashboardResults 6SettingsSupport
ZakPro plan

Good morning, Zak

8 monitors sweeping. 6 unseen listings waiting in Results.
Review results+New monitor
Profit spottedLive listings, after fees
+27.6% vs last week
£6,024.25
Across 33 listings worth buying · 4,251 tracked
Marketplace£5,111.75
Vinted£912.50
+Unseen
612 today
✉Messages sent
145 this week
£Avg margin
£96target 30%
✓Bought
9P&L +£842
LIVE SWEEP8 MONITORS
PING SOUND: ON
Latest catchiPhone 13 Pro 256GB Graphite, unlockedMarketplace · Cardiff · just now
Open dealPause all
Profit spotted, last 12 weeks£30,272
£5,679
14 Jul21 Jul28 Jul4 Aug11 Aug18 Aug25 Aug1 Sep8 Sep15 Sep22 Sep29 Sep
Latest pingsView all
iPhone 13 Pro 256GB Graphite, unlockedMarketplace · now£240+£118Cordless drill, 2 batteries + chargerMarketplace · 4m£45+£33AirPods Pro 2nd gen with caseVinted · 9m£95+£41Nintendo Switch OLED White, boxedOfferUp · 15m£170+£54MacBook Air M1 8GB 256GB SilvereBay · 22m£380+£112
WE MONITOR THE MARKETPLACES RESELLERS ACTUALLY USE
Facebook MarketplaceVintedeBayOfferUpMORE COMING SOON

Facebook Marketplace, Vinted, eBay, and OfferUp in one dashboard. Built for resellers across the UK, US, and EU. Set your searches once and let DealSonar do the watching.

AVAILABLE IN
United KingdomEurope
Automated searchingSet keyword, location, price range, and radius. DealSonar runs your monitors continuously so you never miss a new post.
Instant alertsFacebook Marketplace alerts, plus Vinted, eBay, and OfferUp. Get notified on Dashboard, Email, Discord, and Telegram the second a deal lands.
Smart filtersCut through junk listings with price limits, location radius, and AI filtering so your feed stays focused on real opportunities.
CUSTOM MONITORS

Build searches around what you actually flip

Create monitors for anything: iPhones, MacBooks, PlayStations, designer pieces, bikes, tools, collectibles. Set your keywords, max price, location, and search radius. DealSonar watches Facebook Marketplace, Vinted, eBay, and OfferUp, and only surfaces listings that match.

  • ✓Keyword and price filters
  • ✓Location and radius targeting
  • ✓Multiple monitors running at once
  • ✓Facebook, Vinted, eBay, and OfferUp monitors
New monitorOne marketplace per monitor.
Facebook MarketplaceLocal pickup dealsVintedShipped fashionOfferUpUS local pickupeBayNewest listings
Search queryiPhone 13 Pro
HOW IT WORKS

From monitor to message in four steps

Set it up once. DealSonar watches the marketplaces and pings you when a deal worth chasing appears.

Start free trial
Deals found to date118,008
LIVE
ScannedPinged as deals
SEE IT IN ACTION

Up and running in under a minute

Watch alerts get connected and a monitor go live, start to finish.

FROM REAL USERS

Flippers already on the radar

Straight from Discord and our in-app feedback form. No scripts, no paid quotes.

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“After using this app for about a week, I wanted to take the time to express my gratitude to the developer(s). The app is a great resource, and the team addresses bugs and implements suggested improvements quickly.”

BQfromNYDISCORD
1 / 7
PRICING

Pick your coverage

Every plan starts with a 5-day free trial · no card. Billed monthly, cancel anytime. Because of trial misuse, a card is required to start. You can cancel as soon as the trial begins. Card details are secured by Stripe, the leading online payments provider.

StarterFor getting started with local sourcing.
£25/mo
BILLED MONTHLY · CANCEL ANYTIME
5active monitors
EVERY 30 MIN
Start free trial
✓5 active monitors
✓Facebook, Vinted, eBay + OfferUp
7-DAY FREE TRIAL · CANCEL ANYTIME

Stop missing deals while you sleep.

Start your free 5-day trial. No card required. Set your monitors once and get Facebook Marketplace alerts, plus Vinted, eBay, and OfferUp alerts everywhere you work.

Start free trial
WEB-BASED · NO MOBILE APP REQUIRED · WORKS IN YOUR BROWSER
FAQ

Questions

One saved search: keyword, location, price range, and filters. Each monitor watches for new listings on Facebook Marketplace, Vinted, eBay, or OfferUp.
DealSonar

DealSonar helps resellers across the UK, US, and EU find deals faster with Facebook Marketplace alerts, plus Vinted, eBay, and OfferUp monitoring, instant pings, and profit estimates before you buy. Built for speed. Built for flippers.

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PRODUCTFeaturesAlertsReviewsPricingFAQ
United States
Australia
Minimum
£150
Maximum£300
Used, goodLike newFor parts
LocationCardiff, CF10 · drag the pin to adjust
© OpenStreetMap contributors
Search radius25 km
Create monitor
DEALSONARnowNew ping: iPhone 13 Pro 256GB Graphite, unlocked£240 in Cardiff. eBay sold avg £395, about +£118 after fees.
Latest pingsView all
iPhone 13 Pro 256GB Graphite, unlockedMarketplace · now£240+£118PS5 Disc Edition + controllerMarketplace · 6m£210+£92Running trainers, size 9, worn twiceVinted · 11m£28+£34
DealSonar APPToday at 09:41
iPhone 13 Pro 256GB Graphite, unlockedAsking£240eBay avg£395Margin+£118
DealSonar BotPS5 Disc Edition + controller, £210 in Bristol. Margin +£92.Open listing09:42 ✓✓
DealSonar alerts@dealsonar.ioNew ping: Running trainers, size 9, worn twiceVinted · Leeds · +£34 after fees
MULTI-CHANNEL ALERTS

Get notified everywhere that matters

Speed wins in reselling. Get Facebook Marketplace alerts when a strong listing appears, plus Vinted, eBay, and OfferUp alerts to your Dashboard, Email, Discord, and Telegram. Check the deal, open the listing, and message the seller before the competition.

  • ✓Facebook Marketplace alerts on every match
  • ✓Vinted, eBay, and OfferUp alerts in the same feed
  • ✓Dashboard, email, Discord, and Telegram channels
  • ✓Ping the moment a listing lands
DEAL ANALYSIS

Know your margin before you buy

Every result shows asking price alongside recent eBay sold data and a built-in profit estimate. Set your target margin, account for fees, and decide in seconds whether a listing is worth picking up.

  • ✓eBay sold comps on each listing
  • ✓Profit calculator with fee estimates
  • ✓Target margin based on your preferences
  • ✓Quick view of potential profit per deal
  • MarketplaceUNSEEN
    iPhone 13 Pro 256GB Graphite, unlocked£240 · Cardiff · 2m ago · iPhone 13 monitor
    ANot interested
    Asking£240
    eBay sold avg£395
    Margin after fees30% of sale+£118
    eBay sold · UK · “iphone 13 pro 256gb”Refresh
    Low £340High £445
    This listing £240Average £395
    Priced £100 under the lowest recent sale.
    iPhone 13 Pro 256GB Graphite UnlockedUsed · sold 2 Oct£389Apple iPhone 13 Pro 256GB, very goodUsed · sold 30 Sep£405
All 24Marketplace 17Vinted 7
Unseen only 6
  • MarketplaceMESSAGED
    PS5 Disc Edition + controller£210 · Bristol · 6m ago · PS5 Disc monitor
    ANot interested
    “Hi, is this still available? I can collect today.”Sent ✓
    £ ProfiteBay Sold
    Mark bought
  • MarketplaceUNSEEN
    Gaming PC Ryzen 5 5600, RTX 3060, 16GB£420 · Newport · 18m ago · Gaming PC monitor
    ANot interested
  • VintedUNSEEN
    Running trainers, size 9, worn twice£28 · Leeds · 11m ago · Running trainers, monitor
    BNot interested
2 selectedSelect all on pageMark as seenClear
BUILT FOR RESELLERS

From alert to message in one workflow

DealSonar is a web dashboard built for people who buy locally and sell online. Review new listings, dismiss noise, track what you bought, and message sellers without losing momentum.

  • ✓Clean Results feed with filters
  • ✓Mark listings as not interested
  • ✓Track bought deals and P&L
  • ✓Message sellers on Marketplace faster
ANY CATEGORY. ANY NICHE.

Not just one vertical. Whatever you flip.

Unlike tools built for a single niche, DealSonar works for any item category. Electronics, fashion, gaming, home goods, sports gear, and more. If it shows up on Facebook Marketplace, Vinted, eBay, or OfferUp, you can monitor it.

PhonesLaptopsConsolesTrainersVintageToolsCollectiblesAnd more
01
Create a monitorPick a marketplace, keyword, location, and price range. Save it once.
02
DealSonar sweepsYour monitors run on a schedule. Fresh listings are scored against your filters.
03
A ping landsGet notified on Dashboard, Email, Discord, or Telegram the moment a match appears.
04
Message the sellerOpen the listing, check the margin, and message before the competition does.
✓
Dashboard + email alerts
✓Scans every 30 minutes
✓eBay sold comps and profit estimates
✓AI listing filter
×PC teardowns (Pro and up)
Free trial · no card to start
MOST POPULAR
ProFor resellers running multiple niches at once.
£49/mo
BILLED MONTHLY · CANCEL ANYTIME
12active monitors
EVERY 30 MIN
Start free trial
✓12 active monitors
✓Facebook, Vinted, eBay + OfferUp
✓Dashboard, email, Discord + Telegram alerts
✓Scans every 30 minutes
✓eBay sold comps and profit estimates
✓40 PC teardowns a month
✓AI listing filter
✓Priority support
Free trial · no card to start
ScaleFor full-time flippers who need priority 15-minute scans and serious coverage.
£99/mo
BILLED MONTHLY · CANCEL ANYTIME
20active monitors
2× FASTER · EVERY 15 MIN
Start free trial
✓20 active monitors
✓Facebook, Vinted, eBay + OfferUp
✓All alert channels (email, Discord, Telegram)
✓eBay sold comps and profit estimates
✓80 PC teardowns a month
✓AI listing filter
✓Priority support
Free trial · no card to start
InstantFor sourcing high-churn stock where being first to message wins the deal.
£185/mo
BILLED MONTHLY · CANCEL ANYTIME
5active monitors
FASTEST · EVERY 2 MIN
Start free trial
✓5 active monitors
✓Scans every 2 minutes, our fastest
✓Facebook, Vinted, eBay + OfferUp
✓All alert channels (email, Discord, Telegram)
✓eBay sold comps and profit estimates
✓150 PC teardowns a month
✓AI listing filter
✓Priority support
Free trial · no card to start
COMPARE PLANSStarterProScaleInstant
Monitors512205
MarketplacesAll 4All 4All 4All 4
Dashboard alerts✓✓✓✓
Email alerts✓✓✓✓
Discord alerts—✓✓✓
Telegram alerts—✓✓✓
eBay sold comps✓✓✓✓
Profit calculator✓✓✓✓
PC teardowns / month-4080150
AI junk filtering✓✓✓✓
Scan interval30 min30 min15 min priority2 min
SupportEmailPriorityPriorityPriority
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