Calculator

Look up any LEGO set.

Type a name, set number, or theme. Get the Brick Drop Score with the math behind it.

Set Details

Price ($)

Total Pieces

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Minifigures

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Pieces + minifigs auto-fill from the API. Use "Manual override" only if the data is wrong.

Piece Composition ▼

Auto-detected

Auto-detected breakdown based on set characteristics. Read-only — shown for transparency.

Print & Decoration ▼

0 printed / 0 stickers

Printed pieces add real cost (~$0.50/piece). Stickers cost almost nothing — and many collectors penalize them.

Printed Pieces

Pad-printed tiles, decorated minifig parts

Sticker Sheet Count

Number of stickers in the set's sticker sheet

Color Complexity ▼

Standard palette

Rare colors cost more to produce (small batch runs). Includes pearl, chrome, transparent-rare, lavender, medium azure, etc.

% Rare/Specialty Colors 5%

% Transparent / Translucent 3%

Production & Design ▼

Standard

Licensed IP

Star Wars, Marvel, Disney, Harry Potter — adds 10-15% royalty

Premium / Display Set

Icons, UCS, Architecture, 18+ adult sets command higher pricing

Functional Elements

Powered Up motors, lights, mechanical functions, Technic gearing

New Molds

Brand-new piece designs (~$50K+ tooling each)

Unique Part Types

Number of distinct piece molds in set

Build Time (min)

Estimated assembly time

Packaging & Materials ▼

Standard

Instruction Books

~$2 each in printing cost

Number of Bags

Total numbered bags in box

Premium Packaging

Magnetic close box, foam inserts, sleeve, collector packaging

Quality & Design ▼

Standard

Qualitative factors that swing real collector value up or down. Auto-detected where possible.

Collector Series

UCS, Icons, Modular Buildings, Architecture flagship — premium engineering built in

Model Completeness

Build Rigidity

Design Excellence

Build Engagement

Alternate Builds

1 for single, 3 for Creator 3-in-1

Engagement captures whether the build process itself is enjoyable or a slog of repetition

IP Demand Level

Years on Market

0 = new release, 5+ = proven classic

Minifig values are computed per-minifig in the Minifigures card at the top of the page based on prints, accessories, and rarity.

Redundancy & Filler ▼

0 pcs

Pieces that exist only because LEGO split one element into multiple smaller ones, padding the count without adding value.

Estimated Redundant Pieces

The Brick Drop Score

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MSRP

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What you get

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Ratio

Why this grade

Sticker price per piece—

Per standard brick—

Brand markup—

Build experience—

See the full math

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Weighted pieces

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Minifig value

Tweak this

Stickers count as parts Spare parts count Trans & printed bonus +0.1

Toggles apply to this verdict only. Refresh resets to defaults.

Compared with

Median for this theme will populate after Phase 2 reaches 50 graded sets.

Set Comparison

Calculate a set and add it here to compare

Top Values

Hand-picked sets with exceptional value. Click any row to load it in the calculator.

Worst Values

Notable overpriced or brand-premium-heavy sets. Click any row to analyze it yourself.

Browse All LEGO Sets

Full Rebrickable catalog — thousands of sets. Filter, grade, and click to analyze.

Select a theme to load sets.

How This Calculator Works

The Core Philosophy

What you get = parts worth, minifig value, printed pieces, functional features, build experience. Brand markup = what LEGO charges beyond that (tooling, license fees, distribution, profit).

Ratio = What you get / MSRP. 1.00 means break-even.

Grading Scale

Grade	Ratio	Meaning
A+	≥ 0.85	Exceptional — rare true bargain
A	≥ 0.70	Excellent value
A-	≥ 0.58	Very good value
B+	≥ 0.48	Great value
B	≥ 0.40	Good value
B-	≥ 0.33	Decent — reasonable premium
C+	≥ 0.27	Fair — typical licensed set
C	≥ 0.22	Average — notable brand premium
C-	≥ 0.17	Below average value
D	≥ 0.13	Brand premium-heavy
D-	≥ 0.08	Heavily overpriced
F	< 0.08	Way overpriced

Piece Composition (8 Categories)

Category	~ Value/pc	Examples
Baseplates	$0.22	16x16+ baseplates, panels
Large Bricks	$0.07	4x4 to 8x8 bricks/plates
Standard	$0.03	1x2 to 2x4 bricks
Small Plates	$0.015	1x1 to 2x2 plates/tiles
Micro	$0.004	1x1 round, cheese slopes
Specialty	$0.06	Clips, hinges, plants
Technic	$0.042	Axles, gears, pins
Large Specialty	$0.11	Wheels, dishes, windscreens

Minifigure Value (updated)

Each minifig is graded individually based on:

Base value — $3.50 default, $5.00 for licensed IP
Printed parts — +$0.50 per printed element (head, torso, legs), capped at $3
Accessories — +$0.40 per weapon, cape, tool, helmet, etc., capped at $2
Rarity — 1.5× if the minifig appears in only 1 set; 1.25× if in 2–3; 0.8× if in 50+ sets
BrickLink market price — when available, shown alongside the heuristic for comparison

Quality & Design Modifiers

Collector Series (UCS, Icons, Modular) — +10% intrinsic
Model Completeness — partial models get -20% to -40%
Build Rigidity — sturdy +10-15%; wobbly -10%
Design Complexity — masterpiece engineering +10-20%
Build Engagement — tedious mosaics/lattices -12-25%
Alternate Builds — 3-in-1 Creator sets multiply utility
IP Demand — Star Wars/Marvel drive buyer willingness
Years on Market — longevity hints at staying power

Print & Decoration

Printed pieces add real value (no fading, premium feel, ~$0.30 each). Stickers are a quality cut.

Color Complexity

Rare and transparent colors cost more to produce in small batches.

Redundancy Penalty

When LEGO uses 2-3 small pieces where one existing piece would work, that padding inflates the count without adding build value.

Data Sources

LEGO.com — current retail prices & availability.
Rebrickable — full catalog, part inventories, minifig breakdowns, rarity signals.
Brickset — historical retail pricing for retired sets.
BrickLink — real marketplace prices (6-month average) for minifigs.