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42201 LEGO Technic Deep-Sea Research Submarine thumbnail image

42201 LEGO Technic Deep-Sea Research Submarine
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42201 LEGO Technic Deep-Sea Research Submarine
  • Deep-Sea Research Submarine thumbnail
  • Deep-Sea Research Submarine thumbnail
  • Deep-Sea Research Submarine thumbnail
  • Deep-Sea Research Submarine thumbnail
  • Deep-Sea Research Submarine thumbnail
  • Deep-Sea Research Submarine thumbnail

LEGO 42201 Deep-Sea Research Submarine is a Technic set currently available at retail for $36.99 and is projected to retire at the end of 2026. Current new-sealed secondary market prices range from $30 to $40, with the average below MSRP at $32. Signals for it are pulling both ways, with fading interest from members against thinning stock at LEGO or Amazon.

Forecast Model

This shows the set's value since release and where our forecast expects it to go.
LEGO 42201 Deep-Sea Research Submarine is a Technic set released in 2025, containing 413 pieces. The model depicts a research sub with functional steering and three spinning propellers. Details include three external air tanks and a cockpit with a seat and controls. An extending arm is provided to grab and lift the included barrel accessory.

Deep-Sea Research Submarine should leave shelves around 2026. From there, our forecast has its value climbing to about $48 within five years.
All regions

For Sale (New/Sealed)

This chart shows the sales listing trends of 42201 Deep-Sea Research Submarine.
 (CA) TECHNIC: Deep-Sea Research Submarine (42201) 413PCS Building Toy $27.99
-24.3%
(US) 42201 TECHNIC: Deep-Sea Research Submarine New Factory Sealed in Box Retire
BrickEconomy Choice
$27.99
-24.3%
(US) Technic Deep-Sea Research Submarine Building Toy 42201 $27.99
-24.3%
(US) 42201 TECHNIC: Deep-Sea Research Submarine New Factory Sealed in Box Retiring Dec 202... $27.99
-24.3%
(US) 42201 TECHNIC: Deep-Sea Research Submarine New Factory Sealed in Box $28.00
-24.3%
(US) Technic Deep-Sea Research Submarine Building Toy 42201 $28.56
-22.8%
(US) TECHNIC: Deep-Sea Research Submarine (42201) NEW $28.79
-22.2%
(US) TECHNIC: Deep-Sea Research Submarine (42201) $28.99
-21.6%
(US) Deep Sea Research Submarine 42201 Building Toy Set Technic NEW $29.50
-20.2%
(US) TECHNIC: Deep-Sea Research Submarine (42201) NEW IN BOX $29.95
-19.0%
(US) Technic Deep-Sea Submarine 42201 $29.95
-19.0%
(US) Technic 42201 Deep-Sea Research Submarine 413 PCS Building Toy NEW Ages 9+ $29.97
-19.0%
(US) Deep-Sea Research Submarine from BrickLink seller TwoButtonBricks $29.99
-18.9%
(US) Technic Deep-Sea Research Submarine Toy - 413 Pieces - 42201 NEW SEALED $29.99
-18.9%
(US) Technic Deep-Sea Research Submarine Toy (42201) Brand New Sealed, Fast Ship $29.99
-18.9%
(US) Technic Deep-Sea Research Submarine 42201 Building Set 413 Pcs New Sealed $29.99
-18.9%
(US) Technic Deep-Sea Research Submarine Building Toy 42201 $29.99
-18.9%
(US) Deep-Sea Research Submarine from BrickLink seller its_ur_bro_halo $29.99
-18.9%
(US) Deep-Sea Research Submarine from BrickLink seller bricksverse $29.99
-18.9%
(US) TECHNIC: Deep-Sea Research Submarine (42201) $30.00
-18.9%
(US) Technic 42201 Deep-Sea Research Submarine (AOFC) $30.00
-18.9%
Picked for your regionShow 33 more listings

Market Momentum

Neutral
42201 Deep-Sea Research Submarine has cooled as member interest falls. It trades well below its retail price, and Amazon no longer sells the set itself.
DemandLower half in Technic
High demand but falling
12 months agoToday
Price vs retailLast 30 days
24% below retail
Lowest new price at eBay
Outlook:37% bearish·45% neutral·18% bullish
Why it's moving, signals and outlook

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Deep-Sea Research Submarine Questions

What does LEGO 42201 Deep-Sea Research Submarine sell for now?

Right now, Deep-Sea Research Submarine is valued at $32 new. Used copies are worth about $31.

When will LEGO 42201 Deep-Sea Research Submarine retire?

Deep-Sea Research Submarine has been on store shelves since January 2025 and is still available. No retirement date has been announced yet. Based on how long similar sets stay on store shelves, it is expected to retire at the end of 2026.

How does the value of LEGO 42201 Deep-Sea Research Submarine compare with its retail price?

At $32, Deep-Sea Research Submarine sits 15% under retail ($36.99), which is common while a set is still in production.

What is the one-year forecast for LEGO 42201 Deep-Sea Research Submarine?

BrickEconomy's forecast puts Deep-Sea Research Submarine near $39 in twelve months, about 23% more than today. In the short term the market reads neutral. The market signals are balanced for now. This is an estimate and markets can change.

How big is LEGO 42201 Deep-Sea Research Submarine?

Deep-Sea Research Submarine has 413 pieces ($0.09 a piece at its retail price).

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My Collection

Deep-Sea Research Submarine Reviews

30 reviews
4.8
Collectors
Investors
“On to one of 2025’s most unusual Technic sets, the 413-piece 42201 Deep-Sea Research Submarine. Reminiscent of the largely forgotten 1997 Divers sub-theme, 42201 looks rather un-Technic-y, despite being constructed almost exclusively from Technic pieces. A selection of cogs... More operate the pitch of the propellors and the grab-arm.”
Full review at thelegocarblog.com
BrickEconomy Member Review
“The LEGO Technic Deep-Sea Research Submarine (42201) is a highly functional set packed with intricate mechanisms and a fresh, colorful design. With rotating propellers, a tiltable assembly, and a working grabber arm, the set offers a hands-on building experience and great play value. The unique sand-blue elements and clever engineering make this set a standout.”
 

About Technic

TECHNIC is one of The LEGO Company's main lines based on creating detailed model machines and mechanical toys with specialized beams, axles, gears and connectors. The theme was first introduced as the Expert Builder series in 1977, but was officially renamed as TECHNIC in 1984.
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Inspire kids aged 9 and up to explore the secrets of the oceans with this Deep-Sea Research Submarine toy set (42201). The model is packed with features like those found on real submarines, including steering, 3 spinning propellers, 3 air tanks, and a cockpit with seat and controls. The submarine features an extending arm to grab and lift the barrel accessory as kids play out their own sea-bed adventures.

This submarine model kit comes from a range of LEGO Technic sets which feature realistic movement to introduce young builders to the universe of engineering. This set makes a great gift for kids who enjoy buildable vehicle toys.

Let the LEGO Builder app guide your child on an intuitive building adventure, allowing them to zoom in and rotate models in 3D, save sets and track their progress.

Submarine toy set for kids aged 9 and up Let young science and engineering fans create their own deep-sea adventures with this LEGO Technic Deep-Sea Research Submarine toy

Lots of...
Description provided by LEGO©