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63

baseball card sleeves

Worth a look

Shows low returns (0.7%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 80Growth 23Conversion 92Competition 79Returns 97Price range 60Avg price 50Brand share 85Review moat 25Quality gap 20

Returns

Incredible0.7%

return rate — above 5% kills the launch gate

Conversion

Great11.3%

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

Brand share

Great50%

top-5 brand share — no brand owns this niche

Market size

Great$1.2M

$1.2M/yr · 845K searches

Competition

Great36%

top-5 click share — an open shelf

Price range

Good$4.03–$31.22

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

Avg price

Good$12.03

avg listing price — sweet spot $15–$100

Review moat

Bad4,702.45

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-4.7%

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

According to Flapen's Amazon United States niche tracking, baseball card sleeves is a $1.2M/yr Amazon United States market (845K searches/yr). The top 5 brands hold 50% of demand. Verdict: Worth a look — 63/100.

Data updated Jul 30, 2026 · scored weekly · How we score niches

baseball card sleeves market data

Units sold / yr
100K–125K
avg 2,000–2,500/product
Revenue / yr
$1.2M–$1.5M
units × avg price
Conversion rate
11.3%
Avg BSR
#36
Page quality
0%
Prime
100%
Sponsored
100%
Out of stock
2.0%
Avg brand age
35 months
Avg seller age
158 days

Competition & brand share

Clicks spread well past the top 5 (36% combined) — an open shelf where new products get seen.

Brands

30 rising

Sellers

114

Top-5 brand share

50%

Top 20: 94%

Top-5 click share

36%

Top 20: 82%

Open market

44%

  • Sooez14%
  • Arjiekwei13%
  • Homthy9%
  • SaiTech IT7%
  • Kitoyz6%
  • TRUGQ6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -4.7% search growth over the last 90 days.
23K18KHoliday '24Prime Day '25Spike '25Holiday '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.5×

Top baseball card sleeves search terms

  • baseball card sleeves267K/yr
  • card protector165K/yr
  • card protector sleeves83K/yr
  • plastic card sleeves54K/yr
  • card protectors38K/yr
  • plastic sleeves for cards35K/yr
  • trading card protectors22K/yr
  • football card sleeves30K/yr
  • collector card sleeves13K/yr
  • trading card sleeve34K/yr
All search terms

Top baseball card sleeves 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.

0%3%$35K6%$69K9%$104K12%$138K1001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

What buyers say about baseball card sleeves

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

What buyers love

Quality-Overall25%

“Awesome quality”

Value For Money15%

“Great Deal”

Size-Overall12%

“Fit well”

Advertised Vs Actual Product12%

“Exactly as pictured”

Ease Of Use5%

“easy to open”

Drop/Impact Protection4%

“Good protective”

Durability3%

“Pretty durable”

Strength3%

“It is sturdy”

Collectibles2%

“Great for collectors”

Thickness2%

“Works well, thicker than expected”

What buyers complain about

Size-Overall19%

“Didnt fit”

Quality-Overall16%

“Poor Quality Control”

Strength7%

“Too flimsy”

Thickness6%

“Not as thick as thought”

Advertised Vs Actual Product6%

“NOT AS ADVERTISED”

Adhesion/Stickiness4%

“Poorly glued”

Durability3%

“Rip easily”

Functionality-Overall3%

“These cards do not work”

Ease Of Use3%

“Hard to use”

Value For Money2%

“Could be a little cheaper”

Top return reasons

Size-Overall35%
Value For Money9%
Advertised Vs Actual Product9%
Thin6%
Quality-Overall6%
Material Quality5%
Defective Material/Parts4%
Functionality-Overall3%
Strength3%
Thickness2%

Common questions

Is baseball card sleeves profitable to sell on Amazon United States?
The niche generates $1.2M/yr across 44 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is -4.7%. Flapen's verdict: Worth a look (63/100).
How competitive is the baseball card sleeves niche?
30 brands and 114 sellers compete. The top 5 products take 36% of clicks and top 5 brands hold 50% of demand.
What do buyers complain about in baseball card sleeves?
Top complaints mined from reviews: Size-Overall, Quality-Overall, Strength. The return rate is 0.7%.
When does demand for baseball card sleeves peak?
Demand is steady year-round — the busiest month runs 1.5× the quietest.
What does it cost to enter the baseball card sleeves niche?
Listings span $4.03–$31.22; the average listing price is $12.03 (sweet spot $15–$100). The average incumbent carries 4,702 reviews — the moat a new listing must climb.