What is the best deal for a beginner looking to start building?

The loose version at $18 offers the most budget-friendly entry point into the LEGO Mindstorms system.

How much more is the sealed version compared to the loose version?

The sealed, new version is $82 more expensive than the loose version, priced at $100 versus $18.

Is the CIB condition worth the extra cost over the loose parts?

For collectors or those wanting all original packaging, the CIB version is available for $82, compared to $18 loose.

Robotics Invention System [1.0] #9719 — LEGO Mindstorms Set Value

Name: Robotics Invention System [1.0] #9719 — LEGO Mindstorms Set Value
Brand: LEGO

LEGO Mindstorms

What the Robotics Invention System [1.0] #9719 LEGO set is worth — loose, complete, and sealed.

Robotics Invention System [1.0] #9719 value — Loose ‏75 ر.س.‏ · $20 · Complete (CIB) ‏307.5 ر.س.‏ · $82 · Sealed (new) ‏375 ر.س.‏ · $100. Prices updated أغسطس 2026.

Theme · LEGO Mindstorms

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Converted from USD at the ECB reference rate — sold comps are US-market sales.

→ Steady

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قيمة CIB الشهرية، بناءً على مبيعات فعلية. Chart values in USD.

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بيانات الأسعار مُتحقَّقة من · 1

PriceCharting — Robotics Invention System [1.0] #9719 (LEGO Mindstorms)‏306.15 ر.س.‏ · $81.64

Item details

UPC / EAN: 5702010997190
Brand: LEGO
Theme: LEGO Mindstorms
Set number: #9719
Release date: January 1, 1998

Robotics Invention System [1.0] #9719 (LEGO Mindstorms) resale value

A loose Robotics Invention System [1.0] #9719 set runs around $20, a complete copy (all pieces + box + instructions) about $82, and a factory-sealed box commands $100.

What drives the price

Retired sets, completeness (every piece + minifigs + instructions + box), and sealed condition drive LEGO value. Exclusive sets and discontinued themes appreciate the most; minifigs alone can carry significant value.

قيمة إعادة البيع حسب الحالة

Loose: ‏75 ر.س.‏ · $20
Complete (CIB): ‏307.5 ر.س.‏ · $82
Sealed (new): ‏375 ر.س.‏ · $100

Compare Loose vs Complete (CIB) prices →

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أين تشتري

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Flip math

Profit after eBay fees, against the real sold value:

Sale price

You pay

Shipping

Ads %

Sale price$20.00

eBay fee (13.3%)−$2.65

Fixed order fee−$0.30

Shipping cost−$5.00

Net after fees$12.05

قيّم قطعتك مجاناً

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Price guide

What this actually trades for — sold values by condition vs. what sellers are asking today

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Condition	Value	Based on
Loose	‏75 ر.س.‏ · $20	eBay sold comps
Complete (CIB)	‏307.5 ر.س.‏ · $82	eBay sold comps
Sealed (new)	‏375 ر.س.‏ · $100	eBay sold comps

الأسئلة الشائعة

What is the best deal for a beginner looking to start building?: The loose version at $18 offers the most budget-friendly entry point into the LEGO Mindstorms system.
How much more is the sealed version compared to the loose version?: The sealed, new version is $82 more expensive than the loose version, priced at $100 versus $18.
Is the CIB condition worth the extra cost over the loose parts?: For collectors or those wanting all original packaging, the CIB version is available for $82, compared to $18 loose.