Mars Rover leads Jun 5 radar — highest forecast +40.21% and −30.5% off MSRP
LEGO Technic 42158 NASA Mars Perseverance Rover takes the Jun 5 lead with the highest 2-year post-retirement forecast (+40.21%) and tightest confidence band of all tracked sets, currently trading at −30.5% off its $99.99 MSRP. LEGO Art 31213 Mona Lisa is runner-up carrying the deepest dollar discount (−38.2%, $61.76 vs. $99.99 MSRP). LEGO Super Heroes DC 76328 Classic TV Series Batmobile makes its data debut after a watch-and-wait period at −9.7% with a wider forecast range (+18.53%). All four secondary-market platforms returned zero listings for the 26th consecutive run.
Three sets come off cooldown today with complete BrickRanker data for the first time since tracking began. BrickRanker (a LEGO secondary-market price tracking site) is the sole data source for all entries. Secondary-market platforms return zero timestamp-verified listings for the 26th consecutive run.
Quick-scan summary
BrickRanker single-source. All prices USD. BR avg = BrickRanker 6-month rolling average sold price.
| Rank | Set | MSRP | BR avg | vs. MSRP | 2-yr forecast |
|---|---|---|---|---|---|
| #1 | 42158 Technic NASA Mars Perseverance Rover | $99.99 | $69.48 | −30.5% | +40.21% |
| #2 | 31213 Art Mona Lisa | $99.99 | $61.76 | −38.2% | +28.71% |
| #3 | 76328 Super Heroes DC Classic TV Series Batmobile | $149.99 | $135.38 | −9.7% | +18.53% |
| Watch | 75405 Star Wars Home One Starcruiser | $69.99 | $48.57 | −30.6% | +20.57% |
| Watch | 31208 Art Hokusai — The Great Wave | $99.99 | $77.06 | −22.9% | +30.12% |
#1 — 42158 NASA Mars Perseverance Rover
Set 42158-1 | LEGO Technic | 1,132 pieces | no minifigures | MSRP $99.99 | Estimated retirement Jul 31, 2026
BrickRanker's 6-month rolling average is $69.48 — a −30.5% discount, saving $30.51 vs. retail. The 2-year post-retirement forecast is +40.21% (range: +37.54% to +42.98%), the highest of all 10 tracked sets in today's field. 1
That forecast range deserves attention: the spread is only 5.4 percentage points (+37.54% to +42.98%). That is the tightest confidence band in today's tracked field — narrower than the Mona Lisa's 13.6-point range and far tighter than the Batmobile's 20.7-point band. BrickRanker's model reaches that confidence with 70 total recorded sales and high reliability, meaning the +40.21% midpoint is genuinely well-anchored rather than a single extreme estimate. 1
The combination puts 42158 at the top of the field by a clear margin: deepest discount among NASA/space-theme sets, highest forecast with the tightest confidence band, and a $69.48 average that keeps absolute capital at risk moderate. For a $99.99 MSRP Technic set, −30.5% represents meaningful secondary-market softening ahead of the July 31 retirement estimate. The set includes the Ingenuity helicopter alongside the Perseverance rover and carries an official NASA co-branding.
Authentication notes for 42158
Technic sets see lower counterfeit rates than licensed minifigure sets, but a few indicators are worth checking:
- NASA decal printing: The set includes NASA-branded stickers. Genuine sets use crisp, accurately sized sticker sheets; counterfeits often show blurred lettering or slight color shifts on the red NASA logotype.
- Gear and axle tolerances: Technic mechanical assemblies are built to tight tolerances. Test any gear-based functions on a secondhand unit — stiff or grinding action in the rover arm indicates out-of-spec parts, common in counterfeits.
- Box imagery accuracy: The box depicts both the Perseverance rover and the Ingenuity helicopter. Counterfeit boxes sometimes reproduce the Perseverance only, omitting the helicopter model from the cover render.
#2 — 31213 Mona Lisa
Set 31213-1 | LEGO Art | 1,503 pieces | no minifigures | MSRP $99.99 | Estimated retirement Jul 31, 2026
BrickRanker's 6-month rolling average is $61.76 — a −38.2% discount, saving $38.23 vs. retail. That's the deepest absolute dollar discount of any set in today's tracked field: $38+ below MSRP on a $99.99 set. The 2-year post-retirement forecast is +28.71% (range: +21.93% to +35.49%). 2
The trade-off vs. the Mars Rover is apparent: steeper current discount, but lower forecast ceiling and a wider confidence range. With 42 total recorded sales (vs. 70 for 42158), the Mona Lisa's price history is somewhat thinner, which explains the broader +13.6-point forecast band. Still, BrickRanker rates the source confidence as high.
The Art series has a reliable post-retirement track record — the adjacent 31208 Hokusai (also in today's field, detailed below) trades at $77.06 with a +30.12% forecast and 72 sales, offering a useful calibration point. Mona Lisa sits $15 below Hokusai's average while sharing the same MSRP, making it the deeper-discounted Art series entry. Buyers deciding between the two Art series sets should note that Hokusai's 72 sales give its forecast a somewhat more stable grounding — but Mona Lisa's −38.2% discount gives it a lower cost basis going into the retirement. 2
#3 — 76328 Batman: The Classic TV Series Batmobile
Set 76328-1 | LEGO Super Heroes DC | 1,822 pieces | 1 exclusive minifigure | MSRP $149.99 | Estimated retirement Jul 31, 2026
Today is the first run with complete data for 76328 — previously tracked as watch-and-wait with no BR price on record. BrickRanker's 6-month rolling average comes in at $135.38 against the $149.99 MSRP — a −9.7% discount (saving $14.61 vs. retail). The 2-year post-retirement forecast is +18.53% (range: +6.67% to +27.40%). 3
The forecast is the weakest of today's ranked entries — +18.53% with a 20.7-point range is materially less confident than both 42158 and 31213. That wide band (+6.67% to +27.40%) means best case is ~27%, but the lower bound of +6.67% is barely above breakeven after accounting for any transaction costs. The high BrickRanker reliability rating (45 sales, 3 ratings averaging 6.7/10) suggests the data is real, but the model itself is expressing genuine uncertainty about post-retirement performance. 3
One notable data point: the shelf life is only 1 year, 10 months — the shortest of any tracked set. Sets with short shelf lives have less historical secondary-market data for comparable periods, which partly explains the wide forecast band. The exclusive Batman minifigure (value: $30.34 per BrickRanker, 22% of set value) provides some price floor support. 3
The −9.7% discount is the narrowest of today's ranked sets; at $135.38 average, the entry price is also the highest. This is a watch-and-monitor position rather than a strong buy on current data.
Authentication notes for 76328
The Classic TV Series Batmobile is a licensed DC set with a distinctive 1966 Adam West aesthetic — a target for counterfeits in some markets:
- Red trim and fin detail: The set's signature red pinstriping and tailfins use precisely molded specialty elements. Counterfeit versions often show slightly off-shade red (more orange-tinted) and simplified fin geometry.
- Exclusive Batman minifigure: The Adam West-era Batman uses a specific blue-and-grey suit printing not found on any other LEGO set. Mismatched torso or leg printing, or incorrect cape material (should be fabric, not rigid), are immediate counterfeit indicators.
- Windscreen element: The Batmobile uses a large curved windscreen piece. Verify the LEGO stud logo on the inside face of the windscreen — this is a common omission on counterfeit parts.
Honorable mentions
| Set | BR avg | MSRP | Discount | Forecast | Sales |
|---|---|---|---|---|---|
| 75405 Star Wars Home One Starcruiser | $48.57 | $69.99 | −30.6% | +20.57% | 71 |
| 31208 Art Hokusai — The Great Wave | $77.06 | $99.99 | −22.9% | +30.12% | 72 |
| 42130 Technic BMW M 1000 RR | $181.93 | $249.99 | −27.2% | +26.33% | 193 |
| 42161 Technic Lamborghini Huracán Tecnica | $38.21 | $49.99 | −23.6% | +38.89% | 23 |
75405 Home One Starcruiser enters tracking today with its first complete data. At −30.6% off a $69.99 MSRP, it matches the Mars Rover's discount percentage at a much lower absolute price ($48.57 average). The +20.57% forecast and 71 sales are solid for a 559-piece Star Wars vehicle. The "Retiring soon!" tag on BrickRanker's retirement tracker adds urgency. 4
31208 Hokusai — The Great Wave sits at −22.9% with +30.12% forecast and 72 sales — the highest sales volume of any Art series set in the tracked field, giving its forecast the most reliable grounding of the two Art entries. Buyers comparing Art series options should note Hokusai's better liquidity vs. Mona Lisa's deeper discount. 5
42130 BMW M 1000 RR remains the most liquid set in the field at 193 total sales, with a −27.2% discount and +26.33% forecast. Price data is from February 2026 (4 months stale). High confidence from volume; staleness is the main caveat. 6
42161 Lamborghini Huracán Tecnica holds the highest forecast outside of the Mars Rover at +38.89%, but only 23 sales anchor that figure — the lowest volume in today's field. The wide range (+26.24% to +49.06%) reflects that thin data. Low absolute price ($38.21 average) limits capital at risk for buyers willing to accept the uncertainty. 7
Platform scanner: 26th consecutive zero
All four monitored secondary-market platforms — eBay, Mercari, Vinted, and Depop — returned zero timestamp-verified new listings in the 24-hour window ending June 5, 15:00 ET. This is the 26th consecutive run without a confirmed listing on any monitored platform. BrickRanker's retirement tracker now tags 110 sets retiring July 31, 2026 across 39 themes. 8
One note on 42151 Bugatti Bolide: at −34.5% off MSRP ($32.73 vs. $49.99), it carries the second-deepest discount in today's field. However, its BrickRanker page shows neither a piece count nor a 2-year forecast — this is the 7th consecutive run with that data absent. Without forecast data it cannot be ranked against the other entries. It remains under observation. 9
Price data: BrickRanker 6-month rolling averages as of June 5, 2026. All figures USD. 42158, 31213, 76328, and 75405 appear with complete data for the first time today. Secondary-market monitoring covers eBay, Mercari, Vinted, and Depop; BrickLink and BrickEconomy are permanently inaccessible for automated data collection. PriceCharting does not track LEGO sets. All data reflects BrickRanker's secondary-market sold-price tracking — not a live buy price. Verify listings independently before purchasing.
Cover image: LEGO Technic 42158 NASA Mars Perseverance Rover box art via BrickRanker
References
- 1LEGO NASA Mars Perseverance Rover (42158-1) — BrickRanker
brickranker.com
- 2LEGO Mona Lisa (31213-1) — BrickRanker
brickranker.com
- 3
- 4LEGO Home One Starcruiser (75405-1) — BrickRanker
brickranker.com
- 5LEGO Hokusai — The Great Wave (31208-1) — BrickRanker
brickranker.com
- 6LEGO BMW Motorrad M 1000 RR (42130-1) — BrickRanker
brickranker.com
- 7LEGO Lamborghini Huracán Tecnica (42161-1) — BrickRanker
brickranker.com
- 8Retirement Tracker — BrickRanker
brickranker.com
- 9LEGO Bugatti Bolide (42151-1) — BrickRanker
brickranker.com
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