Last updated October 14, 2026. Figures below are from Rip Station's EV page snapshot of that date and will have changed; the method has not.
Every graded-card machine worth your money publishes three numbers. Most people read one of them. Here is how to read all three, and the one sentence that stops you from being fooled by any of them.
The three numbers
| Number | What it is | Who sets it |
|---|---|---|
| Pack price | What you pay. Fixed. | The platform |
| Expected value (EV) | The average estimated market value of every card currently loaded in the machine. If the machine holds 100 cards worth $5,250 in total, EV is $52.50. | The platform's pricing engine, from public comps |
| Buyback | What the platform will pay you, instantly, for whatever you pull: a stated percentage of that card's estimated value, inside a time window. | The platform, from the same estimated value |
Worked example: a $50 machine
Rip Station's $50 Pokemon machine, October 14, 2026:
- Pack price: $50.00
- EV: $52.50, which is a +5.0 percent edge on paper, before any cost
- Buyback: 83 percent of estimated value, so expected buyback proceeds are $52.50 x 0.83 = $43.58, a -12.8 percent result against the price paid
Both statements are true at once. The average card in the machine is worth more than the pack. The average instant cash-out is worth less than the pack. The gap between them, about $9 on a $50 pack, is the platform's margin on a sell-back, and it is the price of liquidity: you can turn a random slab into a balance in one click, and that convenience costs 17 percent of value.
Net EV: the number to compare platforms with
Multiply EV as a share of price by the buyback rate and you get what an average pull returns if you sell everything back. On this machine: 105 percent x 83 percent = 87 percent. That product, which we call Net EV, is the only fair way to compare platforms, because a 90 percent buyback on a pool worth 96 percent of price (86 percent net) pays less than an 85 percent buyback on a pool worth 110 percent (93 percent net). We keep a machine-by-machine Net EV table for eight platforms.
How to read the odds table
The same machine's odds that day: $35-$45: 56.0 percent; $45-$50: 19.8 percent; $50-$100: 19.7 percent; $100-$200: 3.6 percent; $200-$500: 0.8 percent; $500-$5,000: 0.1 percent.
Three things to notice. First, three quarters of pulls land below the pack price. Second, the EV of $52.50 is above the price because the top bands, though rare, are large: one pull in 125 lands between $200 and $500. Third, the odds are computed from the live pool, not from a sealed-product pull-rate table, so they change every time a card is pulled or loaded. A snapshot from last week is not this week's machine.
Why EV is not profit
- Variance. EV is the average over the whole pool. Any single rip is one draw, and most draws are below average by construction when the distribution has a long right tail.
- The pool changes. Consecutive rips are not independent draws from a fixed pool. If the chase card comes out, the EV drops until the machine is restocked.
- Realizing value costs money. Selling a card yourself means marketplace fees, shipping or both. Buyback is cheaper than that, and it still costs 17 percent. "Worth $52.50" and "have $52.50" are different states.
- Estimated value is an estimate. It comes from public comps and a model. A thin market for a specific grade of a specific card can move the number up or down on one sale.
When discounts change the math
A discount moves the pack price, not the EV. On the same machine, an 8 percent code takes the price to $46.00 against $52.50 of EV: a +14.1 percent paper edge. Buyback proceeds at $43.58 are now a -5.3 percent result instead of -12.8. A 17 percent discount would make expected buyback roughly break-even. That is the honest way to think about any promotion: it narrows the gap between buyback and price, and whether it closes it is arithmetic you can do in your head.
Keep, ship or sell back: the decision rule
- Pulled something you want to own? Keep it vaulted or ship it. Buyback is irrelevant.
- Pulled something you would sell anyway? Compare 83 percent now against what you would net selling it yourself after fees, shipping and time. On a $40 card, 83 percent instantly usually wins. On a $2,000 card, listing it yourself usually wins, if you have the patience.
- Pulled a chase card? Check whether the platform's estimated value is current. If the market moved up since the last comp, the buyback is underpaying you; sell it on the marketplace instead.
The one sentence
A machine with a positive EV sells you a random graded card at roughly market value, and the buyback is the price of changing your mind. Everything else on the page is detail. If a platform does not publish EV, odds and the buyback basis with a timestamp, you cannot do this arithmetic, and that is the arithmetic that tells you what you are buying.
Related: how to rip graded slabs online, and Rip Station's pull-rate calculator for the at-least-one odds across several rips.
Frequently asked questions
What is pack EV on a graded-card machine?
The average estimated market value of all cards currently loaded in the machine. It is an average over the pool, not a prediction for any single pull, and it changes as cards are pulled and restocked.
If EV is above the pack price, do I make money?
Not on average once you cash out. Instant buyback pays a percentage of card value (83 percent on Rip Station), so expected buyback proceeds are usually below the pack price even when EV is above it. EV above price means you are buying a random card at about market value.
How is instant buyback calculated?
As a stated percentage of the pulled card's current estimated market value, not of the pack price. On Rip Station it is 83 percent for seven days after the rip, optional, and credited as a balance.
How are pack odds calculated?
From the live composition of the cards loaded in the machine, grouped into value bands. They update as the pool changes and are not a fixed pull-rate table.
Do discounts change EV?
No. A discount lowers the pack price and leaves EV unchanged, which narrows the gap between expected buyback and what you paid. Whether it closes the gap is simple arithmetic: price x (1 - discount) against EV x buyback rate.