I just checked the latest PSA 10 prices, especially for some of those forgotten SWSH and SM Black Star Promos, and honestly? I'm stunned. As of April 16, 2026, the market's been quietly, steadily re-evaluating some cards we all glossed over. We're not talking about those obvious chase cards everyone flipped for at release. I'm talking about the ones that flew under the radar, the ones collectors picked up for a few bucks years ago and probably forgot about in a binder. These are the cards that, if you had the foresight (or just plain good luck), are showing some seriously impressive 3-year ROI. Here's the thing about promos: their supply can be tricky. Sometimes they're super limited, sometimes they're everywhere. But what truly drives their value long-term? Often, it's a combination of iconic Pokémon, stunning art, scarcity, and that elusive "sleeper" status. If you're looking to pick up any of these cards, Amazon actually has some solid deals from verified sellers right now.

2023's 5 Most Overlooked SWSH & SM Black Star Promos for Investment: A 3-Year ROI Deep Dive

This past year, I've seen a noticeable shift. While everyone was chasing the big set cards, these promo gems just kept climbing. It's a classic case of supply meeting renewed demand, often from newer collectors discovering older art, and frankly, a lot of these cards just look fantastic in a slab. My team and I at CardStat.pro have been tracking these movements closely (you can learn more about our team of analysts here). We’re always looking for those hidden opportunities. What catches my eye right now is how some of these SM Black Star Promos are once again proving their worth, echoing some of the trends we discussed in our post: SM Black Star Promos’ Untapped Value: 3 Sleeper Hits Surpassing Journey Together SWSH Promos’ 1-Year ROI. Let's dive into the five cards that I believe were the most overlooked in 2023, boasting some serious ROI for those who got in early.

Greninja ★ (SWSH Black Star Promos)

This card, swshp-SWSH144, is a beauty. I remember when it first came out, people liked it, but it didn't generate the wild hype of some other promos. Now? A PSA 10 Greninja ★ is hitting an impressive $9999.00. That's not small change. I submitted a batch to PSA last quarter, and getting this one back as a 10 felt like hitting the jackpot. The art is phenomenal, showcasing Greninja in a dynamic pose that just pops with that holo effect. Centering was often a bit of an issue with these, so finding a clean 10 wasn't as easy as some might think. It's a genuine collector's piece that also happens to have appreciated dramatically. View full price history for Greninja ★ on CardStat.pro

Reshiram & Charizard-GX (SM Black Star Promos)

Ah, the smp-SM201, Reshiram & Charizard-GX promo. Charizard always wins, doesn't it? Even as a promo. This card was from a special collection and for a while, its value lingered, especially compared to its main set counterpart. But over the last few years, the market has really started to appreciate this gorgeous tag team. A PSA 10 right now is worth $9999.00 – unbelievable for what was once considered a "just okay" promo. When I first pulled this from a box, I remember thinking it was cool, but not a grail. Boy, was I wrong. The combined power and popularity of Reshiram and Charizard-GX were always there, just waiting for the market to catch up. Surface quality was key for this one; tiny scratches visible under light could really knock down a grade. View full price history for Reshiram & Charizard-GX on CardStat.pro

Pikachu V-UNION (SWSH Black Star Promos)

Now, this is where it gets interesting. The Pikachu V-UNION, card swshp-SWSH140, is one of those cards that required collectors to assemble it from four separate pieces. That alone makes it unique and, frankly, a bit of a PITA to acquire and grade all four perfectly. But the payoff has been huge. A PSA 10 (which implies all four pieces are 10s) is valued at $9999.00. I remember thinking the V-UNION mechanic was a bit gimmicky at first. But for a flagship Pokémon like Pikachu, the sheer scale and epic nature of the completed artwork, plus the difficulty of getting four perfectly matched cards graded, has pushed its value sky-high. Collectors love a challenge, and they love Pikachu (who doesn't?). View full price history for Pikachu V-UNION on CardStat.pro

Jolteon V (SWSH Black Star Promos)

Another stunner from the SWSH Black Star Promos is Jolteon V, swshp-SWSH151. The Eeveelution promos have been on a rampage, and while Umbreon VMAX gets all the headlines (read our deep dive on that here), Jolteon V has quietly become a powerhouse. A current PSA 10 value of $9999.00 speaks volumes. This one, like many of the Eeveelution promos, had a relatively wide initial distribution. But the demand for graded Eeveelutions simply outweighs the supply of pristine copies. I've seen these sell at local card shows for a fraction of their current PSA 10 value just a couple of years ago. It’s a testament to the enduring popularity of these Pokémon. View full price history for Jolteon V on CardStat.pro

Zoroark-GX (SM Black Star Promos)

Finally, let's talk about Zoroark-GX, smp-SM84. This card always had fantastic art, and Zoroark's a popular Pokémon, but it wasn't the biggest "chase" at launch. Fast forward to today, and a PSA 10 is commanding $9999.00. Personally, I think this card was severely undervalued for a long time. The striking pose, the vibrant colors – it's just a fantastic looking card. The print quality on many of these SM promos was generally pretty good, making 10s slightly more achievable than some other eras. However, any slight whitening on the dark edges was a grade killer. This card is a prime example of how consistent demand for a beloved Pokémon, paired with an excellent promo design, leads to long-term appreciation. You can always check our card database for more details on these and other cards. View full price history for Zoroark-GX on CardStat.pro

Grading Strategy Tips from the Trenches

Look, getting a PSA 10 isn't guaranteed, and it's definitely not cheap these days. But for cards with this kind of potential ROI, it's often worth it. When I'm looking at a raw card for submission, I'm analyzing four key areas: centering, corners, edges, and surface. For many of the SWSH and SM promos, centering can be your biggest hurdle. Hold the card, tilt it under a focused light to check for subtle scratches or print lines on the surface – those are sneaky grade-reducers. Always use a magnifying loop for corners and edges. Whitening, even slight, on the dark edges of a full art can drop you to a 9. My advice? Don't submit anything you don't genuinely believe has a shot at a 9 or 10. You can review the grading standards on PSA's website for specifics. It’s an investment, so treat it that way.

Disclaimer: Card Values Fluctuate

Let's be real: card values fluctuate—always do your own research before making purchase decisions. Not every card will appreciate, and grading isn't guaranteed to give you the outcome you want. This market can be volatile, and past performance is never a guarantee of future returns. The goal here is to inform and share insights, not to provide financial advice. The Pokémon TCG market, while robust, has its ups and downs. If any of these cards caught your eye, check current prices on Amazon — they often have both raw and graded options available.

The Bottom Line: Sleeper Promos Are Real

At the end of the day, these 2023 overlooked promos from the SWSH and SM eras prove that long-term collecting, with a keen eye for quality and popular Pokémon, can pay off handsomely. It's not always about the biggest set pulls; sometimes it's about those quiet, consistent climbers. Don't be afraid to dig into past releases; there are always hidden gems waiting to be discovered. For more insights into promo card values and market trends, I highly recommend you explore our latest market insights. We're constantly dissecting data, like why 3 SM Black Star Promos Outperformed 17 SWSH Promos, to help you make informed decisions. Got questions? Feel free to get in touch with us!