Graded comparison
At the market level we average how far apart grading houses sit using the same eBay sold median snapshots as the rest of the site. Below that, pick a card and how many top slab lines to compare (ranked by sold median). Charts show current comp medians and, where dated sold comps exist, how each slab's sample moved from the oldest to the newest sale—useful for seeing whether gaps between companies might be stretching or compressing in the same window.
Market-wide: average gaps between grading companies
Aggregated from live eBay sold median snapshots across the catalog. On each card we take the highest sold median slab per grading house, then measure how much higher the expensive house is vs the cheaper one as a percentage of the lower median. Averages below roll those card-level gaps together.
Mean gap
101.3%
Across 68 same-card pairs
Median gap
59.1%
Typical % premium of the higher top slab over the lower
Catalog coverage
68
Cards with ≥2 graders & min 2 comps per row
By company pair
↑Higher sold median↓Lower sold median
| Pair | Difference | Cards |
|---|---|---|
↑↓ PSA ACE | 101.3%difference | 68 |
How to read this
- Across all active catalog games with imported expansions.
- Uses the same eBay sold median snapshots as the database card page. Each catalog card contributes at most one top median per grading house (best slab line for that brand on that card). In pair rows, the first company is whichever has the higher average top-slab sold median across shared cards (the second is lower).
- Rows need at least 2 sold comps. Company pairs need at least 5 shared cards so averages are not dominated by one-offs.
- This is not the same grade (e.g. PSA 10 vs BGS 10): it compares each brand’s strongest slab line on the same card, so mixes grades and games. Use the per-card tool below for an exact slab breakdown.
Choose a card
Search the catalog, then pick how many top slab lines to compare (by sold median). We use the same eBay comp snapshots as the database card page.