Koshin StudioTCG booster box price per pack calculator
How much per pack? How many times the list price?
This converts the price of a booster box or set into a price per pack and compares it with the list price. In Japan, trading card list prices are usually given per pack, but what is sold is often a box (a case holding several packs) or a set. Comparing a box price directly with the per-pack list price makes a fair price look like a “30× scalper price.” This calculator puts both in the same unit first.
Amounts are in Japanese yen, as cards are priced in Japan. The calculation itself works in any currency if you enter every amount in the same one.
The typical counts are for a standard Japanese booster box. Products differ, so always enter the pack count printed on the product page or the box.
Example 1: is a ¥5,782 ONE PIECE box a scalper price?
ONE PIECE Card Game booster boxes in Japan always hold 24 packs. With a list price of ¥240 per pack, the box list price is ¥240 × 24 = ¥5,760. A listing at ¥5,782 is only ¥22 above that: essentially list price. Compared directly with ¥240 per pack, it looks like a 24× markup. This exact mistake was reported as a “scalper price” while I was developing my app, and it turned out to be a false alarm.
Example 2: the Pokémon box that looked “30×”
A Japanese Pokémon Card Game expansion booster box holds 30 packs at a list price of ¥180 per pack, so the box list price is ¥180 × 30 = ¥5,400. Sold at exactly ¥5,400, it is still 30 times the per-pack price. For a while my app had learned the pack count for not a single Pokémon expansion box, so it compared ¥5,400 with ¥180 and showed a “30× scalper price.”
Pack counts differ by product, though. The Pokémon “30th CELEBRATION” box holds 20 packs at ¥360 each, for a list price of ¥7,200. Assuming “Pokémon means 30 packs” makes the opposite mistake.
How many packs are in a box: counted from 179 listings
While building the app, I took the 480 box listings in its feed and counted the 179 whose titles stated a pack count. By game:
| Game | Typical packs | What I counted |
|---|---|---|
| Magic: The Gathering | 30 | 60 listings (33 with 30 packs, 19 with 12) |
| Weiß Schwarz | 12 | 45 listings (25 with 10 packs, 17 with 12) |
| Yu-Gi-Oh! OCG | 30 | 19 listings (12 with 15 packs, 6 with 30) |
| Duel Masters | 16 | 14 listings (6 with 16 packs, 4 with 14) |
| Digimon Card Game | 24 | 14 listings, all 24 packs |
| Gundam Card Game | 24 | 8 listings, all 24 packs |
| hololive OFFICIAL CARD GAME | 12 | 8 listings, all 12 packs |
| ONE PIECE Card Game | 24 | 5 of 6 listings with 24 packs (said to be standardized officially) |
| Haikyu!! VABACA!! BREAK | 18 | Both listings 18 packs |
| Union Arena | 16 | The official product page states 16 packs |
| Pokémon Card Game | 30 | Expansion boxes hold 30 packs (with exceptions) |
Three cautions when reading this table:
- These are counts from listing titles, not official figures. Some games are standardized officially, like ONE PIECE; others split into two values (MTG play and collector boxes, Yu-Gi-Oh! 15 and 30). Where a game splits, the typical value is the larger one.
- Not a single box held 40 packs. The largest I counted was 36.
- Do not read a bundle such as a “5-pack set” as a box’s contents. It underestimates the box list price and makes normal listings look like scalping.
How to use it
- Check the pack count on the product page or box and enter it under “Packs inside.”
- Look up the list price per pack in the official announcement (the publisher’s site) and enter it.
- If there is shipping, enter it under “Shipping and other costs.” Comparing with shipping included is closer to what you actually pay.
- Read “how many times the list price” and “difference from the list price total.”
When this calculation does not fit
- Some products announce a box price rather than a per-pack price. Then enter 1 for “Packs inside” and the box list price as the per-pack price.
- If a product includes a bonus (such as a promo card), its value is not part of this calculation.
- For popular products, market prices differing from list price is normal. This calculator only shows “how many times the list price.” It does not decide whether a price is fair. Unpopular products selling below list price is normal too.
For the chance of winning when you enter lotteries, use the lottery win chance calculator. To follow lotteries at Japanese stores, see the comparison of Japanese TCG lottery apps.