LEGO 9719 Robotics Invention System is a Mindstorms set from 1998 valued at $200 for new and sealed sets, up 0% from an original retail price of $199.99. Annual appreciation has averaged 0.65% since release. On the used market, values range from $37 to $50 based on condition. Its market is holding its ground, with thinning listings weighed against a value that has slipped lately.

Robotics Invention System Value (New/Sealed)

This chart represents the current new/sealed value of the set Robotics Invention System since February 2018. High accuracy
LEGO 9719 Robotics Invention System is a Mindstorms set in the Robotics Invention System line released in 1998, containing 733 pieces. It centers on the first-generation RCX programmable brick and the 9V Technic components used in early Mindstorms. The set includes three touch sensors and an optical sensor based on the earlier 9V sensor technology. An enclosed CD-ROM provides the software with interactive training missions, programming tools, and building challenges for creating autonomous robots.

A new and sealed Robotics Invention System is currently valued at around $200. The average used price is $40 for those in good overall condition. New and sealed listings currently range from $197 to $389. Our forecast puts it near $202 by next year.

For Sale (New/Sealed)

(US) Mindstorms Robotics Invention System 9719 1998 Vintage Boxed Set 727 PCS
BrickEconomy Choice
$275.00
(US) Robotics Invention System from BrickLink seller Josh1oreilly $148.00
-26.0%
(US) Robotics Invention System from BrickLink seller Sduerr85 $190.00
-5.0%
(US) Robotics Invention System from BrickLink seller thepiecefulproj $199.99
0.0%
(US) MindStorms Robotics Invention Model 3804 New + Lego 9719 +BONUS, Ships Free $389.00
+94.5%
(US) MINDSTORMS Robotics Invention System 9719 Electronic Set 727 Pieces $500.00
+150.0%

Market Momentum

Neutral
Listings are thinning out, but this set's value is slipping, so momentum is holding level.
Supply
Listings down 20%
New copies listed online, this week
Fewer than most in Mindstorms
Growth vs peers+1% typical for 1
+0% over the past year
12 months agoToday
Outlook:22% bearish·53% neutral·25% bullish
Why it's moving, signals and outlook

Compared with other 1 sets

Robotics Invention System ranks last among the 1 sets, largely because its launch price was several times that of most sets above it.

#19 of 19
By growth since retail, +0%
+0%+74%
The weakest performer in the group.
$0.27 a piece
New and sealed value per piece
This set
$0.27
Typical
$0.49
About 45% below the group's typical value per piece.
Top sets by growthSince retail
13803 Robotics Invention System Upgrade Kit+74%
29911 Touch Sensor and Leads+70%
39736 Exploration Mars+61%
199719 Robotics Invention System+0%

Sets in Mindstorms / 1

9747 Robotics Invention System

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 726
Availability Retired
9747 LEGO Mindstorms Robotics Invention System
Retail $199.99
Value $205.25
Growth  +2.6%

9735 Robotics Discovery Set

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 390
Availability Retired
9735 LEGO Mindstorms Robotics Discovery Set
Retail $149.99
Value $180.16
Growth  +20.1%
Annual growth 2.1%

3800 Ultimate Builders Set

Theme / Subtheme Mindstorms / 1
Year 2001
Pieces 321
Availability Retired
3800 LEGO Mindstorms Ultimate Builders Set
Retail $59.99
Value $78.13
Growth  +30.2%
Annual growth 2.5%

9736 Exploration Mars

Theme / Subtheme Mindstorms / 1
Year 2000
Pieces 155
Availability Retired
9736 LEGO Mindstorms Exploration Mars
Retail $49.99
Value $80.51
Growth  +61.1%
Annual growth 7.8%

9732 Extreme Creatures

Theme / Subtheme Mindstorms / 1
Year 1998
Pieces 148
Availability Retired
9732 LEGO Mindstorms Extreme Creatures
Retail $49.99
Value $64.47
Growth  +29.0%
Annual growth 1.1%

9731 Vision Command

Theme / Subtheme Mindstorms / 1
Year 2000
Pieces 138
Availability Retired
9731 LEGO Mindstorms Vision Command
Retail $99.99
Value $108.59
Growth  +8.6%

9730 Robo Sports

Theme / Subtheme Mindstorms / 1
Year 1998
Pieces 91
Availability Retired
9730 LEGO Mindstorms Robo Sports
Retail $49.99
Value $51.87
Growth  +3.8%

3803 Robotics Invention System Upgrade Kit

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 70
Availability Retired
3803 LEGO Mindstorms Robotics Invention System Upgrade Kit
Retail $24.99
Value $43.46
Growth  +73.9%
Annual growth 2.1%

3801 Ultimate Accessory Set

Theme / Subtheme Mindstorms / 1
Year 2000
Pieces 45
Availability Retired
3801 LEGO Mindstorms Ultimate Accessory Set
Retail $49.99
Value $67.60
Growth  +35.2%
Annual growth 6.7%

9911 Touch Sensor and Leads

Theme / Subtheme Mindstorms / 1
Year 2004
Pieces 3
Availability Retired
9911 LEGO Mindstorms Touch Sensor and Leads
Retail $11.99
Value $20.44
Growth  +70.5%
Annual growth 2.7%

9713 Infrared Transmission Tower

Theme / Subtheme Mindstorms / 1
Year 1998
Pieces 2
Availability Retired
9713 LEGO Mindstorms Infrared Transmission Tower
Retail $24.99
Value $25.00
Growth  +0.0%

9757 Touch Sensor

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 2
Availability Retired
9757 LEGO Mindstorms Touch Sensor
Retail $10.99
Value $15.32
Growth  +39.4%
Annual growth 1.2%

3805 Robotics Invention System Upgrade Kit

Theme / Subtheme Mindstorms / 1
Year 2001
Pieces 1
Availability Retired
3805 LEGO Mindstorms Robotics Invention System Upgrade Kit
Retail $19.99

9709 RCX Programmable LEGO Brick

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 1
Availability Retired
9709 Mindstorms RCX Programmable LEGO Brick
Retail $109.99
Value $120.12
Growth  +9.2%

9738 RCX Remote Control Unit

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 1
Availability Retired
9738 LEGO Mindstorms RCX Remote Control Unit
Retail $19.75
Value $20.92
Growth  +5.9%

9755 Temperature Sensor

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 1
Availability Retired
9755 LEGO Mindstorms Temperature Sensor
Retail $23.99
Value $27.04
Growth  +12.7%

9756 Rotation Sensor

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 1
Availability Retired
9756 LEGO Mindstorms Rotation Sensor
Retail $14.99
Value $16.59
Growth  +10.7%

9758 Light Sensor

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 1
Availability Retired
9758 LEGO Mindstorms Light Sensor
Retail $19.75
Value $21.35
Growth  +8.1%
Annual growth 8.1%

9889 Temperature Sensor

Theme / Subtheme Mindstorms / 1
Year 2004
Pieces 1
Availability Retired
9889 LEGO Mindstorms Temperature Sensor
Retail $24.99
Value $28.99
Growth  +16.0%
Annual growth 3.7%

Robotics Invention System Questions

How much is LEGO 9719 Robotics Invention System worth today?

A new, sealed copy of Robotics Invention System is worth about $200 today. The value has slipped 8% in the past 90 days. A used copy in good condition goes for about $40.

Is LEGO 9719 Robotics Invention System retired?

Yes. Robotics Invention System is retired. New copies now come only from the secondary market, where sellers on eBay and BrickLink set the price.

How has LEGO 9719 Robotics Invention System performed since its release?

Robotics Invention System is worth about what it cost at retail, $199.99.

What will LEGO 9719 Robotics Invention System be worth next year?

By this time next year, the forecast has Robotics Invention System near $202, about 1% more than today. In the short term the market reads neutral. Demand, supply and price signals are mixed or quiet. Forecasts are estimates, not guarantees.

How many pieces are in LEGO 9719 Robotics Invention System?

The set contains 733 pieces, about $0.27 each at retail.

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Build and program your own Lego robots! You can create thousands of robotic inventions. There are interactive training missions and challenges on the enclosed CD-ROM, the Lego Mindstorms website and your own imagination.
Description provided by LEGO©