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 R$ 101,35 · $20 · Complete (CIB) R$ 415,53 · $82 · Sealed (new) R$ 506,75 · $100. Prices updated agosto de 2026.

Theme · LEGO Mindstorms

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

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Histórico de preços (completo na caixa)

Valor CIB mensal, com base em vendas reais. Chart values in USD.

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PriceCharting — Robotics Invention System [1.0] #9719 (LEGO Mindstorms)R$ 413,71 · $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.

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	R$ 101,35 · $20	eBay sold comps
Complete (CIB)	R$ 415,53 · $82	eBay sold comps
Sealed (new)	R$ 506,75 · $100	eBay sold comps

Perguntas frequentes

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.