Is graded card storage box profitable to sell on Amazon United States?

The niche generates $2.2M/yr across 37 tracked products. 7 of 8 products launched in the last 360 days are still selling. 90-day search growth is -6.7%. Flapen's verdict: Worth a look (62/100).

How competitive is the graded card storage box niche?

30 brands and 39 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 53% of demand.

What do buyers complain about in graded card storage box?

Top complaints mined from reviews: Size-Overall, Quality-Overall, Durability. The return rate is 1.8%.

When does demand for graded card storage box peak?

Demand peaks in Jun–Jul; the busiest month runs 1.8× the quietest.

What does it cost to enter the graded card storage box niche?

Listings span $12.09–$89.29; the average listing price is $43.43 (sweet spot $15–$100). The average incumbent carries 612 reviews — the moat a new listing must climb.

graded card storage box

Worth a look

Shows a $2.2M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size

Incredible$2.2M

$2.2M/yr · 1.5M searches

Avg price

Incredible$43.43

avg listing price — sweet spot $15–$100

Price range

Great$12.09–$89.29

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

Brand share

Great53%

top-5 brand share — no brand owns this niche

Returns

Great1.8%

return rate — above 5% kills the launch gate

Review moat

Good611.92

avg incumbent reviews — the moat a new listing must climb

Competition

Good48%

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

Conversion

Okay3.3%

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

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Growth

Bad-6.7%

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

Signals No Dominant Brand Low Review Barrier

According to Flapen's Amazon United States niche tracking, graded card storage box is a $2.2M/yr Amazon United States market (1.5M searches/yr). The top 5 brands hold 53% of demand. Demand peaks in Jun–Jul. Verdict: Worth a look — 62/100.

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

graded card storage box market data

Units sold / yr: 40K–50K; avg 1,250–1,500/product
Revenue / yr: $1.7M–$2.2M; units × avg price
Conversion rate: 3.3%
Avg BSR: #215
Page quality: 0%
Prime: 100%
Sponsored: 95%
Out of stock: 1.4%
Avg brand age: 29 months
Avg seller age: 155 days

Competition & brand share

The top 5 products take 48% of clicks — established leaders, but buyers still shop beyond them.

Brands

30 rising

Sellers

Top-5 brand share

53%

Top 20: 91%

Top-5 click share

48%

Top 20: 84%

Open market

41%

KAGSWAMO14%
INCHOICASES12%
HOSOCASE11%
OUUTMEE9%
OEODAJ7%
HZGXQN6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -6.7% search growth over the last 90 days.

Peak months: Jun, Jul · busiest ÷ quietest = 1.8×

Open Trend

Top graded card storage box search terms

graded card case208K/yr +1.4%1.9% conv.
slab case160K/yr +15.0%2.4% conv.
psa slab case144K/yr -8.0%2.2% conv.
sports card case136K/yr -12.6%2.6% conv.
card cases for sports cards100K/yr -8.7%3.0% conv.
trading card case107K/yr -10.8%2.0% conv.
zion card case70K/yr -17.4%0.8% conv.
graded card storage box121K/yr -32.6%1.9% conv.
card cases57K/yr -10.5%1.4% conv.
zion case48K/yr +11.8%0.4% conv.

All search terms

Top graded card storage box 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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

KAGSWAMO Graded Card Storage Box Holds 60+ PSA Slab Card Case for Graded Cards Sports Cards Baseball Trading Card Case Holder Fits PSA CSG BGS and Top Loaders

KAGSWAMO$36.374.7★415 rev

Card Cases for Sport Trading Graded Card Holder IP67 Waterproof Storage Box

INCHOICASES$34.624.5★211 rev

Graded Card Case Storage Box: Trading Card Storage Box with 9 Dividers

HOSOCASE$53.524.6★274 rev

OEODAJ Top Loader Storage Box Trading Card Case for Sports Cards Fits 3 x 4 35PT Hard Sleeves with 18 Color Separators & 6 Foam Dividers Card Box Holders 610+ Top Loaders 140+ Magnetic Holder

OEODAJ$37.754.7★270 rev

OUUTMEE Graded Card Case - Aluminum Alloy Graded Card Storage Box Compatible with 40 Card Slabs Sports Trading Card Case Fits PSA CSG BGS

OUUTMEE$29.424.4★358 rev

Newest

by launch date

Graded Card Case Storage Box - PSA Slab Card Box for Graded Sports & Baseball Card with 9 Dividers - Trading Card Storage Holder for PSA | CSG | BGS & Toploaders - Home & Show Display for Safe Storage

LUGECASE$55.1431 rev

2mo ago

Graded Card Storage Box Graded Card Case for PSA BGS CGC SGC Slabs Sports Card Storage Box for Baseball Trading Cards Top Loaders & One-Touch Holders IP67 Waterproof Hard Case with 2 Dividers

Betschkim$32.93169 rev

3mo ago

EcoVibe Graded Card Case Aluminum Alloy Trading Card Storage Box with Carry Handle Sports Card Case Holders with Dividers Graded Card Storage Boxes Fits Psa TCG Csg BGS SGC Slabs

EcoVibe$28.14168 rev

8mo ago

OEODAJ Top Loader Storage Box Trading Card Case for Sports Cards Fits 3 x 4 35PT Hard Sleeves with 18 Color Separators & 6 Foam Dividers Card Box Holders 610+ Top Loaders 140+ Magnetic Holder

OEODAJ$37.75270 rev

11mo ago

Graded Card Case Storage Box: Trading Card Storage Box with 12 Dividers

HOSOCASE$66.99106 rev

1y ago

What buyers say about graded card storage box

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

What buyers love

Quality-Overall19%

“Solid quality”

Value For Money13%

“Great case for the price”

Advertised Vs Actual Product8%

“As Described”

Storage Capacity7%

“Good storage”

Strength6%

“Sturdy case”

Size-Overall5%

“Great box size”

Durability5%

“Nice and durable”

Collectibles5%

“a useful addition for collectors”

Ease Of Use4%

“Easy to use”

Design-Overall3%

“Awesome sleek look”

What buyers complain about

Size-Overall13%

“Very big”

Quality-Overall13%

“Poor quality control”

Durability9%

“Already falling apart”

Advertised Vs Actual Product5%

“FALSE ADVERTISING”

Weight Heavy4%

“Very heavy”

Magnetic Strength/Adsorption3%

“One was missing a magnet”

Value For Money3%

“Waste of money”

Locking Mechanism3%

“Do not buy if you need anything secured”

Thickness3%

“not as thick as other comparable boxes”

Defective Material/Parts2%

“At least one of the card holders arrived broken”

Top return reasons

Size-Overall42%

Weight Heavy11%

Advertised Vs Actual Product7%

Functionality-Overall4%

Quality-Overall4%

Defective Material/Parts3%

Storage Capacity3%

Value For Money2%

Pockets/Compartments2%

Material Quality2%

Common questions

Is graded card storage box profitable to sell on Amazon United States?: The niche generates $2.2M/yr across 37 tracked products. 7 of 8 products launched in the last 360 days are still selling. 90-day search growth is -6.7%. Flapen's verdict: Worth a look (62/100).
How competitive is the graded card storage box niche?: 30 brands and 39 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 53% of demand.
What do buyers complain about in graded card storage box?: Top complaints mined from reviews: Size-Overall, Quality-Overall, Durability. The return rate is 1.8%.
When does demand for graded card storage box peak?: Demand peaks in Jun–Jul; the busiest month runs 1.8× the quietest.
What does it cost to enter the graded card storage box niche?: Listings span $12.09–$89.29; the average listing price is $43.43 (sweet spot $15–$100). The average incumbent carries 612 reviews — the moat a new listing must climb.