Is sunlu s2 profitable to sell on Amazon United States?

The niche generates $147K/yr across 8 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is -0.8%. Flapen's verdict: Skip it (33/100).

How competitive is the sunlu s2 niche?

2 brands and 6 sellers compete. The top 5 products take 88% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in sunlu s2?

Top complaints mined from reviews: Durability, Heating, Touch/Button Controls. The return rate is 3.0%.

When does demand for sunlu s2 peak?

Demand peaks in Jan–Feb–Dec; the busiest month runs 2.8× the quietest.

What does it cost to enter the sunlu s2 niche?

Listings span $106.86–$139.84; the average listing price is $121.07 (sweet spot $15–$100). The average incumbent carries 118 reviews — the moat a new listing must climb.

sunlu s2

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Review moat

Great117.63

avg incumbent reviews — the moat a new listing must climb

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Avg price

Good$121.07

avg listing price — sweet spot $15–$100

Returns

Okay3.0%

return rate — above 5% kills the launch gate

Conversion

Okay2.9%

search→purchase rate — share of searches ending in a sale

Market size

Okay$147K

$147K/yr · 42K searches

Growth

Bad-0.8%

90-day search growth — must beat 0% to launch

Competition

Bad88%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Price range

Bad$106.86–$139.84

cheapest to priciest tracked listing — scored on the share inside $15–$100

Signals High Price Out of Stock

According to Flapen's Amazon United States niche tracking, sunlu s2 is a $147K/yr Amazon United States market (42K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Feb–Dec. Verdict: Skip it — 33/100.

Data updated Aug 6, 2026 · scored weekly · How we score niches

sunlu s2 market data

Units sold / yr: 2K–2K; avg 100–250/product
Revenue / yr: $182K–$242K; units × avg price
Conversion rate: 2.9%
Avg BSR: #574
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 9.6%
Avg brand age: 26 months
Avg seller age: 244 days

Competition & brand share

The top 5 products capture 88% of clicks — a locked-up shelf that new listings rarely crack.

Brands

2 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

88%

Top 20: 100%

Open market

SUNLU95%
YOOPAI5%
Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -0.8% search growth over the last 90 days.

Peak months: Jan, Feb, Dec · busiest ÷ quietest = 2.8×

Open Trend

Top sunlu s2 products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 8 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

SUNLU S4 3D Printer Filament Dryer Black

SUNLU$114.144.6★521 rev

SUNLU Official Filament Dryer S4 for Nylon TPU PLA PETG ABS (Black)

SUNLU$107.934.6★48 rev

SUNLU S4 3D Printer Filament Dryer Boxer Black

SUNLU$109.254.6★210 rev

SUNLU S4 3D Printer Filament Dryer 4 Spools Capacity Black

SUNLU$106.864.6★107 rev

SUNLU S4 3D Printer Filament Dryer White

SUNLU$111.914.1★46 rev

Newest

by launch date

Sunlu S4 Pro Filament Dryer Dual-Chamber Independent Temp Control 380W Fast Heating to 85C 4 Spool 3D Printer Dehydrator with Filament Storage Kits Compatible with PLA PETG ABS TPU PA etc.

YOOPAI$139.633 rev

1mo ago

SUNLU S4 Pro 3D Printer Filament Dryer Box Upgrade Filadryer S4 (Black)

SUNLU$139.842 rev

3mo ago

SUNLU Official Filament Dryer S4 for Nylon TPU PLA PETG ABS (Black)

SUNLU$107.9348 rev

10mo ago

SUNLU S4 3D Printer Filament Dryer Boxer Black

SUNLU$109.25210 rev

1y ago

SUNLU S4 3D Printer Filament Dryer Black

SUNLU$114.14521 rev

2y ago

What buyers say about sunlu s2

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall17%

“Its a really great device”

Advertised Vs Actual Product15%

“Works as advertised”

Value For Money12%

“its a great value”

Ease Of Use10%

“easy to turn on”

Efficiency8%

“Works great”

Quick Drying4%

“Keep filament nice dry”

Heating4%

“The unit heats evenly”

Design-Overall4%

“Very well thought out design”

Storage Capacity3%

“has plenty of room for full-size spools”

Compatibility-Overall3%

“Compatible with any printer”

What buyers complain about

Durability19%

“Doesn't last”

Heating12%

“First wouldnt heat”

Touch/Button Controls10%

“Holding the power button on the touch screen doesnt shut it off”

Instructions/User Manual/Troubleshooting7%

“Why can't I find the detailed manual online”

Product Condition5%

“New item was not new”

Socket/Port/Plug5%

“very awkward power plug”

Assembly/Installation5%

“There is no assembly instructions whatsoever”

Advertised Vs Actual Product5%

“Advertised ability to pull straight from dryer box to printer is misguided”

Functionality-Overall5%

“did not perform as well as I hoped”

Size-Overall5%

“It is a large size”

Top return reasons

Size-Overall15%

Functionality-Overall13%

Value For Money12%

Defective Material/Parts11%

Compatibility-Overall9%

Advertised Vs Actual Product9%

Heating5%

Smell5%

Display-Overall2%

Add-Ons/Attachments2%

Common questions

Is sunlu s2 profitable to sell on Amazon United States?: The niche generates $147K/yr across 8 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is -0.8%. Flapen's verdict: Skip it (33/100).
How competitive is the sunlu s2 niche?: 2 brands and 6 sellers compete. The top 5 products take 88% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in sunlu s2?: Top complaints mined from reviews: Durability, Heating, Touch/Button Controls. The return rate is 3.0%.
When does demand for sunlu s2 peak?: Demand peaks in Jan–Feb–Dec; the busiest month runs 2.8× the quietest.
What does it cost to enter the sunlu s2 niche?: Listings span $106.86–$139.84; the average listing price is $121.07 (sweet spot $15–$100). The average incumbent carries 118 reviews — the moat a new listing must climb.