I. Context and Calculation Methodology
I. Context and Calculation Methodology
Valuing a LEGO® inventory on the secondary market (platforms such as Bricklink, BrickOwl) requires an analytical granularity that goes beyond simple weight-based estimation. The price of a brick is subject to strict supply and demand dynamics, indexed to colour obsolescence, mould exclusivity and institutional demand (MOC designers, diorama builders).
Sampling Protocol
The Part-Out Value (POV) indicators presented here result from the aggregation of actual sales (Average Sale Prices) over a 6-month window (Sept. 2024 - Feb. 2025). The calculation has been normalised per kilogram according to the following protocol:
- USED Market (100 kg analysed): Parts sorted by reference, purged of damaged elements (cracks, yellowing), and sold individually.
- NEW Market (100 kg analysed): Parts exclusively sourced from part-out (dismantling of sealed new sets), guaranteeing condition Mint.
Valuing a LEGO® inventory on the secondary market (platforms like Bricklink or BrickOwl) requires an analytical granularity that goes far beyond simple bulk weight estimation. The market price of a brick is subject to strict supply and demand dynamics, indexed on colour obsolescence, mould exclusivity, and institutional demand (MOC designers, diorama builders).
Sampling Protocol
The Part-Out Value (POV) indicators presented here result from the aggregation of actual sales (Average Sale Prices) over a 6-month window (Sept 2024 - Feb 2025). Calculations were normalised per kilogram using the following protocol:
- USED Market (100 kg analysed): Parts sorted by reference, purged of damaged elements (cracks, yellowing), and sold individually.
- NEW Market (100 kg analysed): Parts exclusively sourced from sealed set part-outs, guaranteeing Mint condition.
II. Operational Dynamics: The Raw Bulk Myth
II. Operational Dynamics: The Raw Bulk Myth
Warning for professionals and bulk buyers: The theoretical Part-Out Value (POV) does not in any way reflect the purchase value of unsorted Raw Bulk.
It is imperative to dissociate the indexed retail value from the raw acquisition value. Transforming bulk into liquid inventory involves major operational costs (Overhead) that crush margins if the initial acquisition is not optimised.
- 1. Processing Cost: Sorting by type/colour, quality checks (micro-cracks in Reddish Brown), counting and database entry. Hourly labour costs are the no. 1 expense.
- 2. Infrastructure Overhead: High-density storage (Akro-Mils bins, industrial shelving), warehouse rent, shipping materials.
- 3. Transactional Fees: Bricklink commissions (~3%), PayPal/Stripe gateway fees (~2.5% + fixed fee).
- 4. Dead Stock Management: The Pareto law (80/20) applies strictly. A large proportion of the weight consists of references with very low sales velocity, tying up cash.
Acquisition Ratio (The 25-33% Rule)
To guarantee the viability of an Aftermarket business model, the Cost of Goods Sold (COGS) when purchasing unsorted bulk must not exceed 25 to 33% of the target resale value. Buying generic raw bulk at more than €15-20/kg structurally destroys ROI once processing costs are absorbed.
Warning for professionals and bulk buyers: Theoretical Part-Out Value (POV) never reflects the acquisition value of unsorted raw bulk.
It is imperative to decouple indexed retail value from raw acquisition value. Transforming raw bulk into liquid inventory involves massive operational overhead that will crush margins if the initial acquisition is not highly optimised.
- 1. Processing Cost: Sorting by type/colour, quality control (micro-cracks, especially on Reddish Brown), counting, and database entry. Labour is the #1 expense.
- 2. Infrastructure Overhead: High-density storage (Akro-Mils bins, industrial shelving), warehouse rent, shipping supplies.
- 3. Transactional Fees: Bricklink commissions (~3%), PayPal/Stripe gateway fees (~2.5% + fixed fee).
- 4. Dead Stock Management: The Pareto principle (80/20) applies strictly. A huge proportion of bulk weight consists of low-velocity references, tying up working capital for years.
The Acquisition Ratio (The 25-33% Rule)
To guarantee the viability of an Aftermarket business model, the Cost of Goods Sold (COGS) for unsorted bulk must not exceed 25 to 33% of the target resale POV. Buying generic raw bulk at more than €15-20/kg structurally destroys ROI once processing overhead is absorbed.
III. Important Buying Guide: Used LEGO® Bulk
III. Important Buying Guide: Used LEGO® Bulk
This guide sets a cautious purchasing baseline to avoid overpaying for a used lot before sorting, quality control and listing for sale.
Unsorted bulk
€7/kg max.
Without usable minifigures, generic mixed bulk should not be bought above this threshold.
Bulk with minifigures
€9/kg max.
This price assumes the presence of resellable minifigures, complete or largely usable.
Colour-sorted bulk
30% of the resale price
The recommended purchase value corresponds to around 30% of the resale value per kilo, depending on colour.
These prices are purchase ceilings, not resale prices. They take into account sorting time, possible washing, inspection for broken, yellowed or bitten parts, marketplace fees, storage and slow-moving stock. The dirtier, more incomplete or more mixed a lot is, especially if it contains non-LEGO® parts, the lower the price should be.
Recommended purchase table for colour-sorted bulk
| BrickLink Colour | Recommended purchase price / kg |
|---|---|
| Yellow | 2.37 € |
| Blue | 2.88 € |
| Black | 3.42 € |
| Orange | 3.44 € |
| Red | 4.10 € |
| Pearl Gold | 4.33 € |
| White | 4.74 € |
| Trans-Brown (Old Trans-Black) | 4.76 € |
| Dark Bluish Gray | 8.50 € |
| Trans-Clear | 8.51 € |
| Reddish Brown | 9.66 € |
| Light Gray | 9.95 € |
| Tan | 10.28 € |
| Dark Blue | 13.61 € |
| Olive Green | 13.61 € |
| Trans-Red | 14.10 € |
| Light Bluish Gray | 16.15 € |
This guide sets a cautious acquisition baseline to avoid overpaying for used bulk before sorting, quality control, and resale.
Unsorted bulk
€7/kg max.
Without usable minifigures, generic mixed bulk should not be bought above this threshold.
Bulk with minifigures
€9/kg max.
This assumes the presence of resellable minifigures that are complete or mostly usable.
Colour-sorted bulk
30% of resale value
Recommended acquisition value is around 30% of resale value per kilogram, depending on colour.
These are maximum buying prices, not resale prices. They account for sorting time, possible washing, damaged/yellowed/bitten part control, marketplace fees, storage, and slow-moving stock. The dirtier or more mixed a lot is, especially if it contains non-LEGO® parts, the lower the purchase price should be.
Recommended purchase table for colour-sorted bulk
| BrickLink Colour | Recommended purchase price / kg |
|---|---|
| Yellow | 2.37 € |
| Blue | 2.88 € |
| Black | 3.42 € |
| Orange | 3.44 € |
| Red | 4.10 € |
| Pearl Gold | 4.33 € |
| White | 4.74 € |
| Trans-Brown (Old Trans-Black) | 4.76 € |
| Dark Bluish Gray | 8.50 € |
| Trans-Clear | 8.51 € |
| Reddish Brown | 9.66 € |
| Light Gray | 9.95 € |
| Tan | 10.28 € |
| Dark Blue | 13.61 € |
| Olive Green | 13.61 € |
| Trans-Red | 14.10 € |
| Light Bluish Gray | 16.15 € |
IV. Data Visualization (Top 10 Valuations)
IV. Data Visualization (Top 10 Valuations)
Top 10: USED Market (€/KG)
Top 10: USED Market (€/KG)
Top 10: NEW Market (€/KG)
Top 10: NEW Market (€/KG)
V. Price Matrix - USED Inventory
V. Price Matrix - USED Inventory
| Color Nomenclature (BL) | Color Nomenclature (BL) | POV / KG (€) |
|---|---|---|
| Yellow | 17 € | |
| Blue | 20 € | |
| Black | 24 € | |
| Orange | 24 € | |
| Red | 29 € | |
| Pearl Gold | 30 € | |
| White | 33 € | |
| Trans-Brown (Old Trans-Black) | 33 € | |
| Dark Bluish Gray | 59 € | |
| Trans-Clear | 60 € | |
| Reddish Brown | 68 € | |
| Light Gray | 70 € | |
| Tan | 72 € | |
| Dark Blue | 95 € | |
| Olive Green | 95 € | |
| Trans-Red | 99 € | |
| Light Bluish Gray | 113 € |
VI. Price Matrix - NEW Inventory
VI. Price Matrix - NEW Inventory
* Extreme values (e.g. Trans-Green) are explained by the absolute scarcity of new parts in these retired or ultra-specific licensed shades.
* Extreme outliers (e.g., Trans-Green) are explained by the absolute scarcity of new parts in retired or ultra-specific licensed colors.
| Color Nomenclature (BL) | Color Nomenclature (BL) | POV / KG (€) |
|---|---|---|
| Trans-Green | 5 173 € | |
| Trans-Bright Green | 1 197 € | |
| Satin Trans-Light Blue | 659 € | |
| Bright Light Blue | 639 € | |
| Trans-Brown (Old Trans-Black) | 540 € | |
| Lavender | 498 € | |
| Flat Silver | 396 € | |
| Sand Blue | 383 € | |
| Reddish Orange | 319 € | |
| Nougat | 317 € | |
| Trans-Black (2023) | 313 € | |
| Dark Pink | 262 € | |
| Medium Blue | 255 € | |
| Trans-Clear | 223 € | |
| Sand Green | 208 € | |
| Trans-Yellow | 184 € | |
| Trans-Dark Pink | 182 € | |
| Olive Green | 178 € | |
| Bright Light Orange | 162 € | |
| Dark Brown | 158 € | |
| Trans-Dark Blue | 143 € | |
| Bright Green | 140 € | |
| Trans-Red | 133 € | |
| Dark Tan | 132 € | |
| Bright Light Yellow | 129 € | |
| Medium Nougat | 128 € | |
| Pearl Gold | 128 € | |
| Dark Orange | 123 € | |
| Trans-Light Blue | 114 € | |
| Light Aqua | 113 € | |
| Light Bluish Gray | 113 € | |
| Dark Blue | 108 € | |
| Dark Azure | 106 € | |
| Dark Red | 105 € | |
| Light Nougat | 102 € | |
| Dark Bluish Gray | 100 € | |
| Magenta | 99 € | |
| Trans-Orange | 97 € | |
| Dark Turquoise | 92 € | |
| White | 92 € | |
| Red | 90 € | |
| Tan | 89 € | |
| Blue | 88 € | |
| Dark Purple | 86 € | |
| Green | 86 € | |
| Black | 86 € | |
| Orange | 84 € | |
| Bright Pink | 82 € | |
| Reddish Brown | 81 € | |
| Medium Lavender | 80 € | |
| Yellow | 74 € | |
| Neon Yellow | 69 € | |
| Dark Green | 59 € | |
| Lime | 48 € | |
| Coral | 42 € | |
| Yellowish Green | 42 € | |
| Medium Azure | 36 € |