NXT · 9833-1
AC Adapter 230V - 10V Transformer
Similar market value
New$25.01
NXT · 9833-2
LEGO 9833-2 AC Adapter, 120V - 10V Transformer
New / sealed value$25.014.3% above original retail
Original retail$23.99Launch price
Used value$12.00Current estimate
90-day trendN/A12 months recorded
PRICE GUIDE
Current LEGO 9833-2 values
Condition-specific market estimates compared with the original retail price.
New / sealed value
$25.01
+4.3% vs. retail
Used value
$12.00
$11.76 – $14.40
Original retail
$23.99
Launch price
Market values are estimates for the set condition shown; live retailer and marketplace prices may differ.
MARKET TREND
Price history
Source-reported monthly market closes through Jun 2026; these can differ from the current estimated market value.
Monthly close$28.6012 plotted months
Used value$12.00Current estimate
Used range$11.76 – $14.40Current low to high
Latest monthly close$28.60
Period low$23.54
Period high$31.78
Period change+7.4%
MARKET VALUE
Sealed price history
Latest
$28.60
+7.4% over period
View monthly price data
| Month | Open | Low | High | Close | Sales | Source |
|---|---|---|---|---|---|---|
| 2026-06 | $24.70 | $23.99 | $31.20 | $28.60 | 5 | Market data provider |
| 2026-01 | $24.13 | $23.99 | $28.50 | $26.75 | 3 | Market data provider |
| 2025-01 | $24.12 | $23.99 | $28.49 | $26.74 | 7 | Market data provider |
| 2024-05 | $24.13 | $23.99 | $28.50 | $26.75 | 5 | Market data provider |
| 2023-01 | $27.48 | $26.49 | $32.47 | $30.47 | 2 | Market data provider |
| 2022-12 | $23.99 | $23.99 | $29.99 | $27.49 | 5 | Market data provider |
| 2022-08 | $27.45 | $26.00 | $34.67 | $31.78 | 2 | Market data provider |
| 2022-07 | $26.54 | $25.58 | $31.35 | $29.43 | 7 | Market data provider |
| 2021-11 | $24.10 | $23.99 | $28.47 | $26.72 | 5 | Market data provider |
| 2020-09 | $23.99 | $23.99 | $25.08 | $23.54 | 5 | Market data provider |
| 2020-01 | $24.13 | $23.99 | $28.50 | $26.75 | 5 | Market data provider |
| 2019-03 | $24.02 | $23.99 | $28.37 | $26.63 | 5 | Market data provider |
MARKET ACTIVITY
Through Jun 2026
Sales and liquidity
Reported sealed-market sales and monthly price ranges for the latest 6 months.
Reported sales276-month total
Monthly average4.5reported sales
Active months6 / 6with at least one sale
3-month trend+25%15 vs 12 sales
LiquidityLimited activitybased on reported sales
Recent monthly price distributionLow · close · high
Jun 2026
$28.60
$23.99
$28.60
$31.20
5 sales
Jan 2026
$26.75
$23.99
$26.75
$28.50
3 sales
Jan 2025
$26.74
$23.99
$26.74
$28.49
7 sales
May 2024
$26.75
$23.99
$26.75
$28.50
5 sales
Jan 2023
$30.47
$26.49
$30.47
$32.47
2 sales
Dec 2022
$27.49
$23.99
$27.49
$29.99
5 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 growthN/ACurrent sealed value vs MSRP
Annual growthN/A12-month close change
1-year forecast$25.27+1%
5-year forecast$26.30+5.2%
5-year range$26.00 – $27.00Collected estimate
Used value range$11.76 – $14.40Observed market range
MethodSource-provided projectionDisplayed as collected; BrickPriceWatch does not recalculate it.
Forecast sourceMarket data providerSource attached to the forecast fields.
Recorded history12 monthsCurrent history coverage on BrickPriceWatch.
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.
Released in 2006 within the Mindstorms NXT line, Transformer is a functional, system-tied accessory whose appeal is limited by compatibility with an older generation and lack of exclusive elements, and while sealed examples are less common they face condition sensitivity and constrained long-term upside.
SET PRICE GUIDE
LEGO 9833-2 AC Adapter, 120V - 10V Transformer price, value and history
LEGO 9833-2 AC Adapter, 120V - 10V Transformer is a set released in 1996 in the NXT theme with 1 pieces. This BrickPriceWatch price guide combines a current new and sealed value of $25.01, an original retail price of $23.99, and 12 months of source-reported price history in USD.
The current comparison is based on collected market observations rather than a guaranteed selling price. The recorded used value is $12.00. The set is recorded as retired.
Current market dataa current new and sealed value of $25.01
Retail comparisonan original retail price of $23.99
Retailer availabilityno recent verified retailer quote; open the offer panel for the latest observed links.
How to use this LEGO price guide
Use the price guide to compare new and sealed value with the original retail price, inspect monthly high, low, and closing prices, and review current retailer offers before buying. Set condition, completeness, packaging, shipping, taxes, and marketplace timing can change the final price.
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