Technic · 42131-1
LEGO 42131-1 Cat D11 Bulldozer
LEGO 42131 Cat D11 Bulldozer is a Technic set valued at $875 for new and sealed sets, up 75% from an original retail price of $499.99. The set retired in October 2023 with annual appreciation averaging 16.18% since. On the used market, values range from $350 to $503 based on condition. Secondary market prices for new and sealed sets typically fall between $696 and $918.
Market position75% above original retailNew-market estimate vs. retail
90-day trend+1%Recorded value movement
AvailabilityRetiredLatest collected status
History depth57 monthsMonthly market records
PRICE GUIDE
Current LEGO 42131-1 values
Condition-specific market estimates compared with the original retail price.
New / sealed value
$875.00
+75% vs. retail
Used value
$419.38
$350.00 – $503.25
Original retail
$499.99
Launch price
Market values are estimates for the set condition shown; live retailer and marketplace prices may differ.
MARKET TREND
Price history
Sealed-market monthly prices through Jul 2026; used values are a current snapshot.
Sealed latest$899.0412 plotted months
Used value$419.38Current estimate
Used range$350.00 – $503.25Current low to high
Latest close$899.04
Period low$812.45
Period high$983.05
Period change+8.1%
MARKET VALUE
Sealed price history
Latest
$899.04
+8.1% over period
View monthly price data
| Month | Open | Low | High | Close | Sales | Source |
|---|---|---|---|---|---|---|
| 2026-07 | $810.82 | $781.41 | $957.85 | $899.04 | 54 | Brickeconomy |
| 2026-06 | $763.61 | $723.42 | $964.56 | $884.18 | 19 | Brickeconomy |
| 2026-05 | $805.50 | $776.29 | $951.58 | $893.15 | 26 | Brickeconomy |
| 2026-04 | $818.75 | $775.65 | $1,034.21 | $948.02 | 19 | Brickeconomy |
| 2026-03 | $747.07 | $719.97 | $882.55 | $828.36 | 43 | Brickeconomy |
| 2026-02 | $701.66 | $664.73 | $886.31 | $812.45 | 34 | Brickeconomy |
| 2026-01 | $858.64 | $827.50 | $1,014.35 | $952.07 | 29 | Brickeconomy |
| 2025-12 | $707.78 | $670.53 | $894.04 | $819.54 | 36 | Brickeconomy |
| 2025-11 | $766.28 | $738.49 | $905.25 | $849.66 | 49 | Brickeconomy |
| 2025-10 | $848.99 | $804.31 | $1,072.41 | $983.05 | 31 | Brickeconomy |
| 2025-09 | $799.55 | $770.55 | $944.55 | $886.55 | 44 | Brickeconomy |
| 2025-08 | $718.13 | $680.33 | $907.11 | $831.52 | 36 | Brickeconomy |
MARKET ACTIVITY
Through Jul 2026
Sales and liquidity
Reported sealed-market sales and monthly price ranges for the latest 6 months.
Reported sales1956-month total
Monthly average32.5reported sales
Active months6 / 6with at least one sale
3-month trend+3.1%99 vs 96 sales
LiquidityHigh activitybased on reported sales
Recent monthly price distributionLow · close · high
Jul 2026
$899.04
$781.41
$899.04
$957.85
54 sales
Jun 2026
$884.18
$723.42
$884.18
$964.56
19 sales
May 2026
$893.15
$776.29
$893.15
$951.58
26 sales
Apr 2026
$948.02
$775.65
$948.02
$1,034.21
19 sales
Mar 2026
$828.36
$719.97
$828.36
$882.55
43 sales
Feb 2026
$812.45
$664.73
$812.45
$886.31
34 sales
Activity labels describe reported historical sales only; they do not guarantee that a set can be sold immediately.
VALUE OUTLOOK
Growth and retirement
Total growth+75%New / sealed value
Annual growth+16.2%Recorded annual rate
1-year forecast$914.99+4.6%
5-year forecast$1,171.27+33.9%
5-year range$1,137.00 – $1,203.00Collected estimate
Used value range$350.00 – $503.25Observed market range
MethodSource-provided projectionDisplayed as collected; SetWatch does not recalculate it.
Forecast sourceBrickeconomySource attached to the forecast fields.
Recorded history57 monthsCurrent history coverage on SetWatch.
ConfidenceNot independently scoredA range appears only when the source supplies bounds.
Forecasts are directional estimates, not guaranteed future prices or investment advice. Actual value depends on condition, demand, fees, and sale timing.
A large licensed Technic flagship released in 2021, Cat D11 Bulldozer 42131 shows post-retirement moderate appreciation driven by its CAT branding and advanced motorized display appeal, and scarcity tied to its complex build is balanced by volatility from app-dependent electronics and remake risk.
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