Blind boxes or a confirmed figure?

Set a spending limit and compare independent boxes with an all-in quote for the exact figure you want.

Published by The Doll Scout · Sources checked: 2026-10-02

Example values are hypothetical, not brand odds or current prices.

Use one currency throughout. Amounts are rounded to two decimals. Include applicable costs yourself; this is not a tax or currency-conversion tool.

Enter your own values, or try the labeled example below.

Calculation method

For n affordable independent boxes and target probability p, the chance of a target is 1 − (1 − p)^n. When stopping at the first target, expected boxes used are [1 − (1 − p)^n] / p. At p = 0, all n boxes are used. A lower average spend does not mean the target is guaranteed or that you should buy.

Worked example: budget 100, box cost 15, fixed costs 10, confirmed quote 80 and a 5% target chance permit 6 boxes. Maximum spend is 100; the target chance is 26.49%, with a 73.51% chance of no target.

These models do not describe sealed no-repeat cases, POP NOW hints or changing probabilities. Unknown rates should stay unknown. Never copy a rate from another brand or release.

Collecting field guide

Practical answers with worked examples, explicit limits and sources you can check.

Which blind-box probability model fits?Use independent-draw math only when each box has the same chance and previous outcomes give no information about the next one.Check a toy retailer before payingBegin with the official regional store or directory, then verify the exact seller and item. Product photos and a familiar logo do not establish authorization.Measure a display that actually fitsUse the empty inside space and the full outline of the object in its intended pose. Outside box dimensions and nominal toy height are not enough.Start a collection you can keep enjoyingChoose a small theme, a spending limit and a place to display it. A clear wish list is more useful than treating every new release as a missing piece.