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LEGO® Toy Store | Auctions - Best Deals at the Lowest Price
Robotics Invention System
9747
- LEGO® Mindstorms -
Robotics Invention System is a LEGO® Mindstorms Set released in 1999.
Set Information:
Set Information:
- Pieces: 726
- Minifigs: 0
You will find below the best auctions and items available on eBay for this title. We already worked on the search keywords so you will get the best results right away. Check out the FAQ for more information on what our tool has to offer.
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$12.99
(1 Bid)
(1 Bid)
Time left: Auction Ended!
Item location: US
Condition: Used (3000)
Available since: 2025-10-13 20:00 PDT
Seller: goodwill_industries_of_san_francisco (328003) [98.7%]
1.
$19.00
(0 Bid)
(0 Bid)
Time left: 3 days 15 hours
Item location: US
Condition: Used (3000)
Available since: 2025-04-23 12:06 PDT
Seller: urimaya (629) [100.0%]
2.
Item location: US
Condition: Used (3000)
Available since: 2024-09-19 13:12 PDT
Seller: stuntte_32 (580) [96.9%]
3.
$14.24
Item location: US
Condition: Used (3000)
Available since: 2025-08-20 20:59 PDT
Seller: **southernbelle** (2738) [99.7%]
4.
Item location: US
Condition: Used (3000)
Available since: 2025-08-21 11:44 PDT
Seller: thisisecp2 (1031) [99.0%]
5.
$30.00
Item location: US
Condition: Used (3000)
Available since: 2024-04-21 16:45 PDT
Seller: spartan5450 (2025) [97.6%]
6.
Item location: US
Condition: Used (3000)
Available since: 2025-08-21 20:28 PDT
Seller: lkc1232 (869) [98.7%]
7.
$9.99
Item location: US
Condition: Very Good (4000)
Available since: 2025-03-22 18:35 PDT
Seller: ashleynena (4182) [99.7%]
8.
Item location: US
Condition: Used (3000)
Available since: 2025-03-22 19:26 PDT
Seller: kopel001 (275) [100.0%]
9.
$10.99
Item location: US
Condition: Used (3000)
Available since: 2025-09-23 15:40 PDT
Seller: gibal_39 (5080) [99.0%]
10.
$49.99
Item location: US
Condition: Used (3000)
Available since: 2025-01-24 14:30 PST
Seller: mrobert2ou (791) [99.7%]
11.
Item location: US
Condition: Used (3000)
Available since: 2023-07-24 15:28 PDT
Seller: bay.vintage (895) [99.2%]
12.
Item location: US
Condition: New (1000)
Available since: 2025-03-24 20:58 PDT
Seller: calbricks (160) [100.0%]
13.
![*[MOST PARTS SEALED]* LEGO® Mindstorms Robotics Invention System 1.5 #9747| 1999](http://i.ebayimg.com/thumbs/images/g/ERAAAeSwX6Rofql6/s-l280.jpg)
![*[MOST PARTS SEALED]* LEGO® Mindstorms Robotics Invention System 1.5 #9747| 1999](http://i.ebayimg.com/images/g/23MAAeSwRipoiThT/s-l280.jpg)
![*[MOST PARTS SEALED]* LEGO® Mindstorms Robotics Invention System 1.5 #9747| 1999](http://i.ebayimg.com/images/g/3rgAAeSwUndoiThX/s-l280.jpg)
![*[MOST PARTS SEALED]* LEGO® Mindstorms Robotics Invention System 1.5 #9747| 1999](http://i.ebayimg.com/images/g/8rsAAeSwC6JoiThb/s-l280.jpg)
![*[MOST PARTS SEALED]* LEGO® Mindstorms Robotics Invention System 1.5 #9747| 1999](http://i.ebayimg.com/images/g/mzcAAeSw35xoiThe/s-l280.jpg)
![*[MOST PARTS SEALED]* LEGO® Mindstorms Robotics Invention System 1.5 #9747| 1999](http://i.ebayimg.com/images/g/tkUAAeSw3r5oiThi/s-l280.jpg)
![*[MOST PARTS SEALED]* LEGO® Mindstorms Robotics Invention System 1.5 #9747| 1999](http://i.ebayimg.com/images/g/nnQAAeSw9GdoiThl/s-l280.jpg)
$96.29
Item location: CA
Condition: Used (3000)
Available since: 2025-07-21 18:21 PDT
Seller: bclegoparts (4) [100.0%]
14.
$39.99
Item location: US
Condition: Used (3000)
Available since: 2025-07-25 17:41 PDT
Seller: yard-sale-goods (1943) [99.1%]
15.
Item location: US
Condition: Used (3000)
Available since: 2024-12-28 23:15 PST
Seller: dealscouters (413) [100.0%]
16.
$11.99
Item location: US
Condition: Like New (2750)
Available since: 2024-06-26 07:37 PDT
Seller: jaspergolden (690) [100.0%]
17.
$9.99
Item location: US
Condition: Good (5000)
Available since: 2025-06-26 13:51 PDT
Seller: the_grey_gargoyle (628) [100.0%]
18.
Item location: US
Condition: Used (3000)
Available since: 2024-03-27 13:56 PDT
Seller: pedepicks (1025) [99.3%]
19.
Item location: US
Condition: New: Other (See Details) (1500)
Available since: 2023-09-28 11:58 PDT
Seller: maynstreamfigures (1643) [100.0%]
20.
Item location: US
Condition: New: Other (See Details) (1500)
Available since: 2024-10-28 19:10 PDT
Seller: cheaperfinds (4007) [99.7%]
21.
$50.00
Item location: US
Condition: Used (3000)
Available since: 2025-03-29 10:19 PDT
Seller: fosdickandco (1605) [100.0%]
22.
Item location: US
Condition: Used (3000)
Available since: 2025-06-30 15:07 PDT
Seller: swededeals (5363) [99.5%]
23.
$14.95
Item location: US
Condition: Used (3000)
Available since: 2023-10-31 07:45 PDT
Seller: gatorbricks (554) [100.0%]
24.
Item location: US
Condition: Used (3000)
Available since: 2025-10-01 11:10 PDT
Seller: eia813 (196) [95.2%]
25.
Item location: DE
Condition: Gebraucht (3000)
Available since: 2025-09-01 22:53 PDT
Seller: www-steinpalast-de (43886) [99.9%]
26.
Item location: DE
Condition: Gebraucht (3000)
Available since: 2025-09-01 22:53 PDT
Seller: www-steinpalast-de (43886) [99.9%]
27.
Item location: US
Condition: New: Other (See Details) (1500)
Available since: 2025-10-02 07:51 PDT
Seller: ana991 (6579) [100.0%]
28.
Item location: US
Condition: Used (3000)
Available since: 2025-04-02 08:05 PDT
Seller: sabricks (2220) [99.3%]
29.
$200.00
Item location: US
Condition: Used (3000)
Available since: 2023-06-24 16:35 PDT
Seller: enamo_edwi (1313) [88.9%]
30.
Item location: US
Condition: Used (3000)
Available since: 2025-01-28 09:57 PST
Seller: pitocu (1832) [99.8%]
31.
Item location: US
Condition: Used (3000)
Available since: 2024-12-04 18:17 PST
Seller: axle1987 (101) [100.0%]
32.
Item location: US
Condition: Like New (2750)
Available since: 2022-09-05 22:12 PDT
Seller: adgarf46 (21) [100.0%]
33.
Item location: US
Condition: New (1000)
Available since: 2025-02-26 14:53 PST
Seller: tahabbe-0 (87) [95.8%]
34.
Item location: US
Condition: Used (3000)
Available since: 2025-09-06 14:49 PDT
Seller: magicdishwasher (760) [100.0%]
35.
$170.05
Item location: US
Condition: Used (3000)
Available since: 2024-11-08 12:25 PST
Seller: robst-7398 (3812) [99.7%]
36.
$9.99
Item location: US
Condition: Used (3000)
Available since: 2019-04-08 13:50 PDT
Seller: ldwhnfk (11889) [100.0%]
37.
$24.99
Item location: US
Condition: Used (3000)
Available since: 2019-04-08 13:50 PDT
Seller: ldwhnfk (11889) [100.0%]
38.
$42.50
Item location: US
Condition: Used (3000)
Available since: 2025-10-09 06:52 PDT
Seller: mojokagi-us (6091) [100.0%]
39.
$38.99
Item location: US
Condition: Used (3000)
Available since: 2024-12-09 08:08 PST
Seller: reldon2007 (2565) [99.8%]
40.
$4.65
Item location: DE
Condition: Gut (5000)
Available since: 2023-08-10 08:09 PDT
Seller: nostalgiepapier (1975) [99.8%]
41.
Item location: US
Condition: Used (3000)
Available since: 2025-10-11 10:15 PDT
Seller: leonecru-0 (615) [100.0%]
42.
$42.00
Item location: US
Condition: Used (3000)
Available since: 2024-11-12 14:10 PST
Seller: katapat-0 (1724) [99.0%]
43.
$112.50
Item location: US
Condition: Used (3000)
Available since: 2022-02-21 21:31 PST
Seller: oriongalaxy8 (1859) [100.0%]
44.
$40.00
Item location: US
Condition: Used (3000)
Available since: 2025-07-13 13:15 PDT
Seller: fashionexpress365 (2663) [91.3%]
45.
Item location: US
Condition: Used (3000)
Available since: 2025-09-14 20:40 PDT
Seller: hot-lunch (1138) [99.9%]
46.
$35.00
Item location: US
Condition: Used (3000)
Available since: 2025-09-14 23:04 PDT
Seller: apricotpit (238) [100.0%]
47.
$12.99
Item location: US
Condition: Used (3000)
Available since: 2025-08-15 11:37 PDT
Seller: vintageroadshop (1941) [98.7%]
48.
Item location: US
Condition: New (1000)
Available since: 2023-07-16 20:28 PDT
Seller: tinastreasures9 (12) [100.0%]
49.
$69.95
Item location: US
Condition: Used (3000)
Available since: 2021-06-17 11:56 PDT
Seller: cinderfary78 (4317) [97.5%]
50.
Item location: US
Condition: New (1000)
Available since: 2025-08-17 15:58 PDT
Seller: amazingvintagestuff (2863) [98.9%]
51.
Item location: US
Condition: Used (3000)
Available since: 2019-06-18 07:23 PDT
Seller: shopsicilian (1618) [100.0%]
52.
$29.00
Item location: US
Condition: Used (3000)
Available since: 2024-04-19 04:27 PDT
Seller: eskdja (1919) [100.0%]
53.
$314.69
Item location: IT
Condition: Usato (3000)
Available since: 2023-12-19 10:21 PST
Seller: dinscarpell0 (566) [97.6%]
54.
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