- eBay sold listings
- PWCC auction archive
- TCGplayer market data
Three numbers, one decision per card.
Free trackers show what a card costs raw. SlabSpread runs the grade-economics against your floor, your tier, and recent population before anything earns a watchlist slot.
- Freshness window filters one-off outliers from comparable sales.
- Population curve is recalculated against the last 30 days of PSA pushes.
- You can pin your own ROI floor — the watchlist surfaces what survives it.
Population 1,284 · 90-day sold velocity 312 · est. days-to-clear 21
Above floor- 01Scope the setPull every raw card in your catalog through SlabSpread’s live pricing index. Comparable sales, recent comps, and listing depth are normalized into a clean proxy price.
- 02Score the gradeA predictive grade-score weighs centering, edge wear, and surface — calibrated against historical PSA 10 yields for the same set, era, and parallel.
- 03Net the ROIProjected PSA 10 sale, minus submission tier ($18 / $25 / $75 / $150), shipping, population dilution, and 90-day liquidity. If the net is below your floor, it doesn’t surface.
What lands on your desk by email & Discord.
A snapshot from a real member’s watchlist — pins set on the 1.50× ROI floor across active Prismatic Evolutions, Stellar Crown, Surging Sparks, and Twilight Masquerade plays. Alerts fire on price moves and every new PSA 10 that pushes the population curve.
| Card | Net | ROI | Signal |
|---|---|---|---|
Charizard ex — Hyper Rare151 Prismatic Evolutions | $2,810 | 198% | High ROI |
Pikachu ex — Special Art151 Prismatic Evolutions | $895 | 186% | New population |
Lugia V — Alternate ArtStellar Crown | $240 | 253% | Price move |
Latias ex — Special ArtSurging Sparks | $150 | 214% | High ROI |
Greninja ex — Hyper RareTwilight Masquerade | $120 | 285% | Add to pipeline |
Mewtwo ex — Hyper Rare151 Prismatic Evolutions | $395 | 179% | High ROI |
Numbers are illustrative — drawn from a real member’s saved pin. The pipeline tracks every card from raw purchase through submission, crack/keep, and sale.
One plan, two cadence options. Built for $500+/quarter flippers.
$19 a month or $200 a year (save $28 vs paying monthly). Stripe-hosted checkout — SlabSpread never sees your card. Cancel anytime.
Unlimited cards · grade-economics on every catalog card · watchlist alerts by email or Discord.
Stripe-hosted checkout · no card details touch SlabSpread
What free trackers leave on the table.
| Tool | Fee-adjusted ROI | Population curve | Alerts | Pipeline |
|---|---|---|---|---|
| Free trackers (PokemonPriceTracker, PokeTrace, PokePrices) | — | — | — | — |
| Slabfolio | Read-only | Included | — | |
| SlabSpread | Included | Included | Email + Discord | Included |
Common objections, answered straight.
If something here isn’t covered, write to us at slabspread@polsia.app. Real humans, fast turnaround.
Only grade what pays.
Pick a tier and the full catalog opens — your first pin set, your Discord webhook, and alerts by email.