Sports card deal alerts, priced against real sold comps
Most deal alerts tell you a card listed. Almost none tell you whether the price is good. The difference matters, because by the time you have opened the listing, pulled up comps yourself, and decided, the clean deals are gone.
CardboardSniper does the pricing for you before the email ever sends. Each alert shows the listing price next to the fair value for that exact card in that exact grade, computed from real recorded sales.
What a comps verdict looks like
Say you are hunting a 2003 Topps Chrome LeBron James rookie in PSA 9. When one lists, the alert shows the asking price, the fair value from the last 3 PSA 9 sales, and the gap between them in dollars and percent. If the card lists at $4,100 against a $5,000 comp, you know exactly what you are looking at before you click.
When a grade has no recent sales, CardboardSniper says so instead of borrowing a number from another grade. A verdict you cannot trust is worse than no verdict.
Why speed decides who gets the card
eBay's own saved searches email at most once per day, and only when new listings match in the prior 24 hours. A genuinely underpriced Buy It Now rarely survives an hour, so a daily digest is a list of cards other people already bought.
CardboardSniper checks continuously. Alerts typically land minutes after the listing goes live, while the buy button still works.
Set an alert in about 30 seconds
Type the card the way you would say it out loud, paste an eBay link, or enter the cert number off a slab. CardboardSniper resolves it to the exact card, finds the comps, and starts watching. You choose a max price or a deal threshold per alert, and it only emails when a listing clears your bar.
Frequently asked questions
Which sports cards can I get alerts for?
Anything that lists on eBay: basketball, football, baseball, hockey, soccer, and more, in graded slabs from PSA, BGS, CGC, or SGC, raw singles, or sealed wax. If you can describe it or paste a link to it, CardboardSniper can watch for it.
How fast do the alerts arrive?
Typically within minutes of the listing going live. The scanner works continuously rather than on a daily schedule, which is the difference between catching a deal and reading about one.
What makes a listing count as a deal?
You set the bar per alert: a hard max price, or a percent below the grade-matched comp. CardboardSniper prices every new match against the average of the last 3 recorded sales for that card and grade, and only emails when your bar is cleared.
Do I buy through CardboardSniper?
No. Every alert links to the live eBay listing and the purchase happens on eBay under eBay protections. CardboardSniper finds and prices the deal; it never touches the transaction.
How much does it cost?
Collector is $20 a month for 2 alerts, Sniper is $40 for 4, Dealer is $100 for 10. Every plan has every feature and starts with a 7 day free trial, $0 today. Yearly billing gives 2 months free.
Put the scanner on your side.
Free for 7 days. $0 today, cancel anytime. Alerts land in minutes, with the comps math included.
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