Graded card deals, judged grade against grade
Slab pricing goes wrong in one predictable way: someone judges a PSA 8 against the PSA 10 price and calls it a deal. The gap between grades is the whole market, and it is different for every card.
CardboardSniper never crosses grades. A PSA 8 is judged against PSA 8 sales. A BGS 9.5 against BGS 9.5 sales. When the exact grade has no recent sales, you get no verdict rather than a misleading one.
Why grade-matched comps are the whole game
Two slabs of the same card, one grade apart, can differ in price by 5x or more. Any tool that prices "the card" instead of "the card in this grade" will flag fake deals all day: an overpriced 8 looks cheap next to a 10 comp.
Fair value in CardboardSniper is the average of the last 3 sane recorded sales for that exact card, grader, and grade, with obvious outliers filtered before averaging. The comp math rides along in every alert so you can check the work.
Set alerts by cert number
The fastest way to watch a slab is to paste the cert number off the label. CardboardSniper resolves the cert to the exact card and grade, pulls its comps, and starts watching eBay for copies below your threshold. Plain-language descriptions and eBay links work too.
Slabs move fast when they are mispriced
Graded cards are the most liquid corner of the hobby, and dealers run saved searches too. A slab listed 20 percent under comps at Buy It Now is usually gone within the hour. Alerts that arrive in minutes, with the pricing already done, are how you win that race.
Frequently asked questions
Which grading companies are covered?
PSA, BGS, CGC, and SGC slabs are all supported, across sports cards, Pokemon, and other TCGs. Each is priced against sales from its own grading company; a CGC 9.5 is never judged against a BGS 9.5 comp.
What if my card and grade has no recent sales?
CardboardSniper shows no verdict rather than borrowing a number from a different grade or a similar card. You still get the alert that the listing exists; you just will not see a fair-value claim that cannot be backed by real sales.
Can I watch a specific cert number?
You can create an alert from any cert number, and CardboardSniper resolves it to that exact card and grade. The alert then watches for any copy of that card in that grade listing below your threshold, not just the one physical slab.
How is fair value calculated?
It is the average of the last 3 sane recorded sales for the exact card, grader, and grade. Obvious outliers are filtered first. The listing price, the comp, and the gap in dollars and percent are all shown in the alert.
What does it cost to watch slabs?
The same as everything else: Collector $20 a month for 2 alerts, Sniper $40 for 4, Dealer $100 for 10, each with a 7 day free trial and yearly billing at 2 months free.
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