Lego® Technic 42072 WHACK!

Current best price

Market value (new, sealed) on 6 November 2026: £24.93 – 39% above RRP (£17.99).

LEGO 42072 is currently available from £34.98 incl. shipping at Hadley Bricks. Only one retailer in our comparison stocks it.

Updated 6 November 2026 at 20:17

LEGO® Technic WHACK! 42072 (1/6)
LEGO® Technic WHACK! 42072 (1/6)
LEGO® Technic WHACK! 42072 (2/6)
LEGO® Technic WHACK! 42072 (3/6)
LEGO® Technic WHACK! 42072 (4/6)
LEGO® Technic WHACK! 42072 (5/6)
LEGO® Technic WHACK! 42072 (6/6)

Lego 42072 price comparison: where is it cheapest?

Prices incl. shipping to the UK ·

Brickfact may earn a commission when you buy through a merchant link. Commissions do not determine the order of offers. How Brickfact compares prices

iFurther information
The Lego set WHACK! with the set number 42072 is part of the LEGO Technic theme and is recommended for ages 7-14. It was released in 2018. The model has 135 pieces, and we estimate it takes around < 1 hour to build. 62 Brickfact users have this set in their collection.
The set weighs about 0.300 kg. The box measures 10.3 x 5.6 x 2.8 in (26.2 x 14.1 x 7.2 cm). The recommended retail price is £17.99.
Our Brickfact Lego price comparison compares the prices of 1 shop for this set. It is currently cheapest at Hadley Bricks for £34.98 including shipping. That is £0.26 per piece. Unfortunately, the set is currently not available below its recommended retail price.
The Part-Out-Value (POV) is the sum of the average prices paid on bricklink.com for all parts of this set. It is about £10.71.

Lego 42072 product data

Set Information

Set ID
42072
Theme
Pieces
135
Building Time
< 1 hour
Age Range
7-14

Availability

Release
2018
Retiring Status
Retired

Price Information

RRP
£17.99
Insiders Points (for purchase at Lego)
144
Part Out Value
£10.71
i

Packaging

Weight
0.300 kg
Packaging dimensions
10.3 x 5.6 x 2.8 in
EAN (GTIN13)
5702016093254

Popularity with Brickfact users

users have this set
62

62 Brickfact users have WHACK! in their collection.

Based on anonymized Brickfact user collections; shown only for sets with at least 10 users. As of 6 November 2026.

Lego 42072 price trend

Average sale price on secondary marketplaces – not the new price at retailers.

Current market value
£24.93
Growth vs. RRP
+38.6 % £17.99
Range
£15.61 – £24.93
Average
£17.48

Loading price history…

Lego 42072 price history: how has the price changed?

Brickfact has been recording retailer prices since 20/10/2026. Best price so far: £34.98 (17 days ago).

Current best price
£34.98 +94% vs. RRP
Best price since 20/10/2026
£34.98 +94% vs. RRP · 17 days ago

Daily lowest prices at the tracked shops, including shipping. Gaps indicate days with no recorded price. The table lists each shop’s lowest price.

Lowest price per retailer (since 20/10/2026)

RetailerCurrentLowest priceDate
Hadley Bricks LogoHadley Bricks£34.98£34.9806/11/26

Lowest price per day that Brickfact recorded at the retailers in the price comparison, including shipping where known – as in the comparison above. Amazon offers are not included in the price history.

Official Set Description for LEGO 42072 WHACK!

Experience the amazing power and acceleration of this high-speed LEGO® Technic 42072 WHACK! model, featuring a lime-green, red and gray color scheme with racing stickers, sturdy front bumper, large rear spoiler and wide black rims with low profile tires. This advanced building set is equipped with a pull-back motor and a new-for-December-2017 engine pop-out function, which is activated on impact. Combine with the 42073 BASH! pull-back model for extended play possibilities or to create the WHACK! ‘N’ BASH! combi model.

  • Features a powerful pull-back motor, sturdy front bumper, large rear spoiler, wide black rims with low profile tires and an engine pop-out function, which is activated on impact.
  • Check out the lime-green, red and gray color scheme with cool racing stickers.
  • Bring on the 42073 BASH! and let the race begin!
  • Activate the pull-back motor to launch the high-speed WHACK!
  • New-for-December-2017. See the engine fly out of the vehicle body on impact… WHACK!
  • This LEGO® Technic advanced building set is designed to provide an immersive and rewarding building experience.
  • Combine with the 42073 BASH! to create an awesome WHACK! ‘N’ BASH! combi model with 2 pop-out engines!
  • Suitable for ages 7-14.
  • WHACK! measures over 2” (6cm) high, 6” (17cm) long and 3” (9cm) wide.
  • Combi WHACK! ‘N' BASH! model measures over 3” (9cm) high, 7” (20cm) long and 3” (10cm) wide.

Building Instruction for LEGO 42072 WHACK!

LEGO 42072 Frequently Asked Questions

How much does LEGO 42072 WHACK! cost?
On 6 November 2026, the lowest price in the Brickfact price comparison is £34.98 incl. shipping at Hadley Bricks. The RRP is £17.99.
Where can I buy LEGO 42072 cheapest?
Only one retailer in the Brickfact price comparison currently stocks LEGO 42072: Hadley Bricks (£34.98).
Is LEGO 42072 still available?
LEGO has retired 42072 WHACK!. New copies are still available at 1 retailers in our price comparison while stocks last.
When was LEGO 42072 cheapest?
Since tracking began on 20/10/2026, the lowest shop price recorded by Brickfact for LEGO 42072 was £34.98 on 20/10/2026 at Hadley Bricks, including shipping. Amazon prices are not included.

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