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51

poster tube

Worth a look

Shows a sweet-spot price point ($19.23 avg), but a concentrated shelf (top 5 take 69% of clicks) keeps it on the watch list.

Market size 58Growth 57Conversion 61Competition 26Returns 39Price range 77Avg price 86Brand share 33Review moat 61Quality gap 53

Avg price

Great$19.23

avg listing price — sweet spot $15–$100

Price range

Great$8.31–$38.85

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

Conversion

Good5.4%

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

Review moat

Good1,047.43

avg incumbent reviews — the moat a new listing must climb

Market size

Good$465K

$465K/yr · 450K searches

Growth

Good+30.6%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Returns

Okay4.3%

return rate — above 6% kills the launch gate

Brand share

Okay85%

top-5 brand share — brands hold most of the demand

Competition

Okay69%

top-5 click share — leaders hold, buyers still browse

Competition

The top 5 products take 69% of clicks — established leaders, but buyers still shop beyond them.

Brands

12 falling

Sellers

16

Top-5 brand share

85%

Open market

10%

  • TRANSON37%
  • Mr. Pen20%
  • CALPALMY17%
  • CLAUVINCK5%
  • U.S. Art Supply5%
  • MagicWater Supply5%
  • Open — no brand owns it (6 brands, 10%)

Product shelf

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

0%10%$46K20%$93K30%$139K40%$186K101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 23 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +30.6% search growth over the last 90 days.
10K6KSpike '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.6×

Reviews

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

What buyers love

Quality-Overall12%

“It delivers excellent performance”

Strength11%

“tube is very solid”

Advertised Vs Actual Product10%

“As advertised”

Size-Overall10%

“I like how you are able to adjust the size to fit whatever you're placing in it”

Storage Capacity9%

“easy to store”

Value For Money5%

“Fair deal”

Weight Light5%

“Its a lightweight carrier so I dont know how well it would hold up if you were to luggage check with an airline it”

Durability5%

“Super durable”

Adjustability/Rotatability/Reclining4%

“Adjustable and telescoping”

Portability3%

“Convenient for travel”

What buyers complain about

Size-Overall17%

“Small diameter”

Strength13%

“Too flimsy”

Quality-Overall9%

“Quality is not great”

Value For Money8%

“the cost is too high for only a single tube”

Material Quality5%

“The plastic feels cheap and flimsy”

Thickness4%

“Material is a bit thin”

Stretchability/Expandability/Elasticity3%

“could not extend the tube without cutting off completely”

Water Resistance3%

“haven't tested how water-proof they are”

Smell3%

“not great for keeping smell inside”

Ease Of Use2%

“Lengthening it is not as easy as it should be”

Top return reasons

Size-Overall70%
Advertised Vs Actual Product7%
Value For Money4%
Material Quality3%
Strength2%
Functionality-Overall2%
Quality-Overall2%
Defective Material/Parts2%
Thin1%
Locking Mechanism1%