Buying lots is where my margin is made or lost — by the time a card is listed, its profit was mostly decided on the day I bought it. This is the framework I run on every lot before bidding, whether it's a local pickup or a Japanese auction through my import pipeline.
Reading lot photos like a skeptic
Sellers arrange lots to sell them. The cards you can see clearly are the best cards; assume everything obscured is bulk. My photo checklist: are the visible hits actually valuable or just shiny? Can I see edges and surfaces well enough to judge condition? Do the photos show every card or a "representative sample"? Stock photos or one blurry pile shot: I pass, whatever the price.
Per-card cost is the anchor
Total landed cost (price + shipping + fees + import costs if applicable) divided by card count. That number against honest expected value: how many cards will realistically sell, at what average price, minus selling fees and shipping supplies? Gut feel says "there's a Charizard in there"; the division says whether the other 290 cards are subsidizing it.
Sell-through rate: the number that decides everything
The hard truth of lots: you won't sell every card. Some fraction is genuinely unsellable bulk. I model every lot at [60/80/100]% sell-through before buying, and if the lot only works at 100%, it doesn't work. My real historical sell-through on mixed lots has been about [X]% — knowing that number from my own records, rather than guessing, is probably worth more than any single buying trick.
Red flags I've learned to walk away from
- "Unsearched" collections — every lot has been searched; the word is bait.
- Hits shown in sleeves but condition never stated — sleeves hide edgewear beautifully.
- Card counts that are suspiciously round ("~500 cards") paired with weight-based descriptions.
- A seller with no card-selling history dumping "a childhood collection" of modern cards.
- Prices that already reflect the hits' full retail — you're paying for the bulk to be free, and bulk isn't free to you: sorting, storing, and listing it costs time.
A real lot, reviewed
[Walk through one actual purchase: what it cost landed, what the photos showed, what sell-through you modeled, what actually happened, and the final profit or loss. One honest example — including a miss — is worth more than any framework.]
The discipline compounds: every lot evaluated this way makes your instincts better calibrated for the next one.