PSA vs BGS vs CGC vs TAG: What's the Difference and Which Slab Guard to Choose
If you've been collecting graded cards for a while, you've probably noticed that not all slabs are the same. A PSA 10 doesn't have the same look, the same case, or often even the same resale value as a BGS 9.5 or a CGC 10 Pristine. And if you're still not quite sure what sets the four major grading companies apart (PSA, BGS, CGC, and TAG), this guide is for you.
PSA (Professional Sports Authenticator)
PSA remains the benchmark of the market, the most widely recognized company, and for most popular cards, the one that tends to bring the best resale prices. PSA's key trait is simplicity: it gives you a single grade from 1 to 10, without subgrades (it doesn't separate centering, corners, edges, and surface). This appeals to anyone who wants a straightforward, universally recognized seal of trust, from eBay to specialized auctions.
Turnaround: grading times typically range from two to six weeks, depending on the service level chosen.
BGS (Beckett Grading Services)
Beckett is known for being the most detailed. Instead of a single grade, a BGS slab shows four subgrades: centering, corners, edges, and surface, printed directly on the case. A card that scores 10 in all four categories receives the coveted "Black Label," one of the most valued (and rarest) designations in the market.
This level of detail comes at a cost: BGS is historically the strictest grader, and a "regular" BGS 10 (outside the Black Label) is notoriously hard to achieve.
CGC (Certified Guaranty Company)
CGC started out grading comic books and has expanded aggressively into TCG, gaining rapid popularity especially among modern Pokémon collectors. It uses a 1-to-10 scale, topped by the CGC 10 Pristine. It has been building a reputation for standards as strict as BGS's, with clean slabs and competitive pricing.
TAG (Technical Authentication & Grading)
TAG stands out for using computer vision, image-analysis-assisted grading, on a much more granular scale of up to 1,000 points, accompanied by detailed photographic reports. It's the newest of the four companies and, while still building recognition and resale value compared to its more established competitors, it has been gaining ground among collectors who value technical transparency in the grading process.
What About Resale Value?
Generally speaking, for popular Pokémon cards, a PSA 10 tends to sell for more than a CGC 10 or a BGS 10 (outside the Black Label) of the same card, and the difference can range from around 10-30%. CGC has been closing the gap with BGS in market perception, and TAG, despite still being at the base of this hierarchy, is the one that has grown the most in trust in recent years.
It's also worth noting that the grading market has been consolidating: the same parent company that owns PSA has also agreed to acquire Beckett, which would put three of the four major brands under the same group. CGC remains independent. This could, over time, influence pricing and policies across all brands, so it's worth keeping an eye on if you're holding cards as an investment.
Not All Slabs Are the Same Size
Here's the detail many collectors only discover after buying the wrong protection: PSA, BGS, CGC, and TAG don't use the same case. They vary in height, width, and especially thickness, BGS slabs tend to be noticeably thicker, PSA slabs are thinner, and CGC even has multiple holder sizes depending on the thickness of the original card. Even within the same brand, different slab generations can vary slightly (sometimes by plus or minus 0.5 mm).
In practice, this means a generic "one-size-fits-all" protector almost never fits well across all brands: it's either too loose and the card rattles around inside, or too tight and puts pressure on the slab, risking long-term damage.
Why This Matters for Protecting Your Collection
Whichever company you choose to grade your cards, or if, like many collectors, you have a mix of all four, the end goal is the same: protecting your investment. A scratched slab, a chipped corner, or a damaged label loses resale value, no matter who graded it.
That's why at StarAxe Vault we offer Slab Guards designed specifically for each brand, instead of a one-size-fits-all fit. If your cards are PSA, BGS, CGC, or TAG, you get protection engineered exactly for that slab's dimensions, no wiggle room, no excess pressure, with the premium finish your collection deserves.
Explore the collections by brand: PSA, BGS, CGC, and TAG.
Where Can I Buy a Slab Guard?
If you've made it this far, you already know your graded card deserves more than an unprotected slab. StarAxe Vault's Slab Guards fit PSA, BGS, CGC, and TAG slabs perfectly, with two options: Slab Guard Standard, ideal for everyday use, and Slab Guard Premium, for those seeking the highest level of protection. Find all the options in our online store, with shipping to Europe and the United States.