Get an Alert.
Find. Grade. Profit.
CardWatch scans eBay 24/7 and alerts you when cards hit the market. Estimate your profit after all fees, inspect the card, research comps and gem rates — then buy, grade, and flip with confidence.
Free to search. Alerts start at $19/mo.
24/7
eBay Monitoring
15 min
Fastest Scan Cycle
All Sports
Football, Basketball, Baseball +
Every 15 min
Email Alerts
What collectors are saying
“I found a Downtown listed at $400 below market value because CardWatch alerted me before anyone else saw it. This thing pays for itself.”
— Ed
★★★★★“The profit calculator alone is worth it. I can see exactly what I'd make after grading fees, eBay fees, and shipping before I even bid.”
— Jake
★★★★★“I used to spend hours refreshing eBay. Now I just wait for the alert, check the gem rate, and decide if it's worth grading. So much easier.”
— Ethan
★★★★★“Picked up a Prizm Silver for $180, checked the gem rate, sent it to PSA, got a 10. Sold for $850. CardWatch showed me the whole play.”
— Vince
★★★★★“The eBay comps button is clutch. I can verify the market value in seconds instead of manually searching sold listings.”
— Andrew
★★★★★“I love that I can set my own tax rate and fees in the profit calculator. It gives me a real number, not some generic estimate.”
— Emma
★★★★★“Finally an app that does what I was doing manually — scanning eBay, checking SCP prices, calculating profit. All in one place now.”
— Ray
★★★★★“The watchlist alerts are a game changer. I added 8 cards I'm looking for and CardWatch just tells me when they pop up. I don't miss anything.”
— Lauren
★★★★★“I was skeptical at first but the first card I found through CardWatch paid for an entire year of the subscription. Definitely keeping it.”
— Andrea
★★★★★“I found a Downtown listed at $400 below market value because CardWatch alerted me before anyone else saw it. This thing pays for itself.”
— Ed
★★★★★“The profit calculator alone is worth it. I can see exactly what I'd make after grading fees, eBay fees, and shipping before I even bid.”
— Jake
★★★★★“I used to spend hours refreshing eBay. Now I just wait for the alert, check the gem rate, and decide if it's worth grading. So much easier.”
— Ethan
★★★★★“I love that I can set my own tax rate and fees in the profit calculator. It gives me a real number, not some generic estimate.”
— Emma
★★★★★“Finally an app that does what I was doing manually — scanning eBay, checking SCP prices, calculating profit. All in one place now.”
— Ray
★★★★★“The watchlist alerts are a game changer. I added 8 cards I'm looking for and CardWatch just tells me when they pop up. I don't miss anything.”
— Lauren
★★★★★“I was skeptical at first but the first card I found through CardWatch paid for an entire year of the subscription. Definitely keeping it.”
— Andrea
★★★★★“I found a Downtown listed at $400 below market value because CardWatch alerted me before anyone else saw it. This thing pays for itself.”
— Ed
★★★★★“The profit calculator alone is worth it. I can see exactly what I'd make after grading fees, eBay fees, and shipping before I even bid.”
— Jake
★★★★★“I used to spend hours refreshing eBay. Now I just wait for the alert, check the gem rate, and decide if it's worth grading. So much easier.”
— Ethan
★★★★★“Picked up a Prizm Silver for $180, checked the gem rate, sent it to PSA, got a 10. Sold for $850. CardWatch showed me the whole play.”
— Vince
★★★★★“The eBay comps button is clutch. I can verify the market value in seconds instead of manually searching sold listings.”
— Andrew
★★★★★“I found a Downtown listed at $400 below market value because CardWatch alerted me before anyone else saw it. This thing pays for itself.”
— Ed
★★★★★“The profit calculator alone is worth it. I can see exactly what I'd make after grading fees, eBay fees, and shipping before I even bid.”
— Jake
★★★★★“I used to spend hours refreshing eBay. Now I just wait for the alert, check the gem rate, and decide if it's worth grading. So much easier.”
— Ethan
★★★★★“Picked up a Prizm Silver for $180, checked the gem rate, sent it to PSA, got a 10. Sold for $850. CardWatch showed me the whole play.”
— Vince
★★★★★“The eBay comps button is clutch. I can verify the market value in seconds instead of manually searching sold listings.”
— Andrew
★★★★★The problem
You're missing deals every single day
Imagine you add “Jaxson Dart Prizm Silver” to your watchlist. An hour later, CardWatch alerts you that one just got listed on eBay for $185. You check the profit calculator — after PSA grading, eBay fees, and shipping, you'd clear $480 if it grades a 10. You check the gem rate — 45% hit PSA 10 for this card. You buy it, send it to PSA, and it comes back a Gem Mint 10. You list it, it sells for $865. That's the CardWatch workflow — and it happens every day.
Without CardWatch
- ✕ Manually refreshing eBay search pages
- ✕ Missing underpriced cards while you sleep
- ✕ Competitors snag the best deals first
- ✕ Hours wasted scrolling through irrelevant listings
- ✕ No system — just hope and luck
With CardWatch
- ✓ eBay scanned automatically 24/7
- ✓ Email alert with photo, price, and direct link
- ✓ Compare prices to recent sales with one click
- ✓ Filter by condition: raw, graded, near mint
- ✓ Sort by price, seller rating, bids — find the edge
The math
Buy raw. Grade. Profit.
Example grading scenario*
You buy raw
2025 Donruss Downtown Abdul Carter
Raw market value: $235
PSA 10 value
$490
After grading + eBay fees + shipping
Est. profit
+$147
After PSA fee, eBay fees, tax, shipping*
Be first to see new listings
Underpriced cards get listed 24/7. The only question is whether you see them first. CardWatch is free to search and research. Upgrade to Pro for eBay alerts that notify you the moment matching cards are listed.
24/7
eBay monitoring
Free
Card Search
5 min
Scan frequency
Features
Everything you need to collect smarter
eBay Listing Alerts
Get email alerts every 15 minutes and push notifications when cards from your watchlist are listed on eBay — with card photos, price, and seller info.
Profit Calculator
See your estimated profit on every card — raw cost, PSA grading fees (auto-calculated), eBay selling fees, taxes, and shipping. Know if the flip is worth it before you buy.
Market Values
Instant raw and PSA 10 market values on every card from SportsCardsPro. Compare the listing price to what the card is actually worth.
eBay Sold Comps
One-click access to recent sold listings on eBay for any card. Verify the market value with real completed sales before you commit.
Gem Rate Research
Check PSA gem rates before you grade. See what percentage of cards come back as a PSA 10 so you can make smarter grading decisions.
Card Price Database
Search any card and see raw vs PSA 10 values sorted by grading upside. Add any card to your watchlist with one tap to start getting alerts.
Built for
Collectors, flippers, and hobbyists
🏆
PC Collectors
Building a player collection? Set alerts for every parallel and insert. Grab the cards you need at the best prices before they're gone.
💰
Buy-Grade-Flip
Find a card. Estimate your profit after all fees. Inspect the card's condition. Buy it. Grade it. Flip it. CardWatch gives you the tools for every step.
🚀
Prospectors
Tracking specific rookies or parallels? Set up alerts so you're notified as soon as matching cards are listed on eBay.
Stop refreshing eBay manually.
Let CardWatch do the work.
Join collectors who stay ahead of the market. Start your 7-day free trial today — no credit card charged until it ends.
Sign up free →Free to search. Alerts from $19/mo.