If you have looked at online pack ripping, you have probably seen the terms "EV" and "buyback" thrown around. They sound technical, but they are the two numbers that decide whether ripping is a smart way to chase cards or a quick way to lose money. Here is the plain-English version.
EV, in one sentence
Expected value (EV) is the average amount a pack pays back across many opens. If a pack costs $50 and the average value of what you pull is $55, the pack has positive EV. If the average pull is worth $45, it has negative EV.
EV does not promise what you will get on any single rip. One pack might pull a $5 common; another might pull a $400 chase. EV is the long-run average once you smooth out the luck.
A simple example
Say a $50 pack has these odds:
- 90% chance of a card worth ~$40
- 9% chance of a card worth ~$120
- 1% chance of a card worth ~$800
The EV is:
(0.90 × $40) + (0.09 × $120) + (0.01 × $800) = $36 + $10.80 + $8 = $54.80
That pack has an EV of about $54.80 against a $50 price. Positive EV. Over many opens, you would expect to come out slightly ahead before fees - which is rare and why positive-EV packs get attention.
Why most physical packs are negative-EV
When you buy a sealed booster at retail, the retailer, distributor, and manufacturer all take a margin, and the "hit" cards are rare by design. That is why opening retail product is usually negative-EV: it is fun, but on average you get back less than you paid. Online rip platforms can sometimes offer better EV because they buy graded singles in bulk and price packs against real market data.
Important: positive EV is not free money. It usually means slightly positive or break-even before fees and time, with the real value being the experience and the shot at a chase card. Always read the actual odds, not just the marketing.
How buyback works
Buyback is the platform's offer to instantly buy your pulled card back from you at a set percentage of its market value. It is what turns a card you do not want into cash (or credit) immediately, instead of waiting to sell it yourself.
The key number is the buyback percentage. If a card is worth $100 and the buyback is 85%, you get $85 instantly. At 92%, you get $92. That gap looks small on one card but compounds fast across many rips.
Why buyback matters as much as EV
EV tells you the average value of what you pull. Buyback tells you how much of that value you can actually realize on demand. A pack can have great EV, but if the buyback is weak, you lose a big chunk every time you cash out. When you compare rip sites, look at EV and buyback together.
How to read a pack before you rip
- Find the odds. A trustworthy site shows the chase cards and the probability of each tier before you pay. If you cannot see the odds, walk away.
- Check whether randomness is verifiable. "Provably fair" pulls (verifiable on-chain randomness) mean the outcome was not tampered with after you paid.
- Do the EV math, or check theirs. Multiply each tier's value by its probability and add them up. Compare to the pack price.
- Read the buyback rate. The higher the percentage of market value, the better. Confirm it is instant.
- Confirm physical redemption. The card should be a real graded slab you can ship to yourself, not just a digital image.
The bottom line
Positive EV means the pack pays back more than it costs on average. Buyback means you can turn pulls into cash instantly at a percentage of market value. Together they decide whether ripping is a fair deal. Learn to read both, start with a small pack, and you will never rip blind again.
On Slab Station, the chase cards and odds are shown before you pay, pulls are provably fair, and you can sell back instantly or ship the physical slab. See it for yourself.
Educational content, not financial advice. Ripping packs involves risk and the value of any single pull varies widely.