Is knife necklace profitable to sell on Amazon United States?

The niche generates $69K/yr across 40 tracked products. 1 of 5 products launched in the last 360 days are still selling. 90-day search growth is -4.0%. Flapen's verdict: Worth a look (50/100).

How competitive is the knife necklace niche?

22 brands and 57 sellers compete. The top 5 products take 46% of clicks and top 5 brands hold 63% of demand.

What do buyers complain about in knife necklace?

Top complaints mined from reviews: Size-Overall, Sharpness, Durability. The return rate is 1.7%.

When does demand for knife necklace peak?

Demand peaks in Dec; the busiest month runs 1.5× the quietest.

What does it cost to enter the knife necklace niche?

Listings span $7.42–$64.15; the average listing price is $19.38 (sweet spot $15–$100). The average incumbent carries 1,305 reviews — the moat a new listing must climb.

knife necklace

Worth a look

Shows a sweet-spot price point ($19.38 avg), but a small market ($69K/yr) keeps it on the watch list.

Avg price

Great$19.38

avg listing price — sweet spot $15–$100

Price range

Great$7.42–$64.15

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

Returns

Great1.7%

return rate — above 5% kills the launch gate

Brand share

Good63%

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

Competition

Good46%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Review moat

Good1,305.3

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-4.0%

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

Conversion

Bad1.5%

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

Market size

Bad$69K

$69K/yr · 244K searches

Signals No Dominant Brand

According to Flapen's Amazon United States niche tracking, knife necklace is a $69K/yr Amazon United States market (244K searches/yr). The top 5 brands hold 63% of demand. Demand peaks in Dec. Verdict: Worth a look — 50/100.

Data updated Jul 29, 2026 · scored weekly · How we score niches

knife necklace market data

Units sold / yr: 3K–4K; avg 0–100/product
Revenue / yr: $58K–$78K; units × avg price
Conversion rate: 1.5%
Avg BSR: #1,612
Page quality: 0%
Prime: 100%
Sponsored: 73%
Out of stock: 0.7%
Avg brand age: 47 months
Avg seller age: 171 days

Competition & brand share

The top 5 products take 46% of clicks — established leaders, but buyers still shop beyond them.

Brands

22 falling

Sellers

Top-5 brand share

63%

Top 20: 98%

Top-5 click share

46%

Top 20: 76%

Open market

33%

MTECH USA19%
SENFAI18%
AZHU12%
SPITZKANTE7%
generic7%
Omesio4%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -4.0% search growth over the last 90 days.

Peak months: Dec · busiest ÷ quietest = 1.5×

Open Trend

Top knife necklace search terms

mtech knives55K/yr -5.7%0.2% conv.
knife necklace58K/yr -1.4%0.8% conv.
necklace knife36K/yr +6.7%0.7% conv.
knife necklace hidden blade18K/yr -9.8%0.5% conv.
mtech knife14K/yr -8.5%0.1% conv.
neck knife with sheath and necklace13K/yr -14.2%0.8% conv.
mtech13K/yr -16.1%0.1% conv.
m tech usa knives9K/yr +36.6%0.3% conv.
mtech fixed blade knife6K/yr -2.3%0.1% conv.
necklace knife for men9K/yr -27.6%0.6% conv.

All search terms

Top knife necklace 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

SENFAI Enamel Red Bloody Knife Necklace for Halloween 18 in Christmas Drop Dangle Earring (NE)

SENFAI$10.684.1★58 rev

AZHU Neck Knife with Sheath and Necklace Small Black Pocket Knife Full Tang Mini Pocket Knife for Outdoor Camping Hiking Backpacking Every Day Carry

AZHU$14.734.2★130 rev

MTech USA Fixed Blade Knife Neck Knife - Black Blade and Handle Full Tang Includes Nylon Fiber Sheath w/ Pocket Clip and Ball Chain - Hunting Camping Survival Tactical EDC MT-588BK

MTECH USA$10.314.5★6,419 rev

Self Defense Necklace for Personal Safety Hidden Cross Pendant with Safety Lock 21 Inch Stainless Steel Emergency Tool

generic$19.914.1★35 rev

MTech USA Assisted Folding Knife Partially Serrated Gold TiNite Coated Stainless Steel Blade Black Aluminum Handle Pocket Clip Tactical EDC Self Defense- MT-A705BG

MTECH USA$12.014.6★14,841 rev

Newest

by launch date

Self Defense Cross Necklace 21 inch Chain Stainless Steel Hidden Protection Tool with Safety Lock

Generic$20.0073 rev

2mo ago

Self Defense Necklace for Personal Safety Hidden Cross Pendant with Safety Lock 21 Inch Stainless Steel Emergency Tool

generic$19.9135 rev

8mo ago

Stainless Steel Mechanical Rotatable Gear Pendant Necklace for Kids & Adults Fidget Jewelry for Anxiety Relief Stress Steampunk Cyberpunk Accessories for Men Boys Teens Gifts for Son Brother

Velryn$16.9597 rev

11mo ago

SPITZKANTE 5.79 Mini Neck Knife Kiridashi Style Full Tang Fixed Blade EDC Knife with Khaki ABS Handle 5Cr14MoV Steel Sheath and Necklace Outdoor Camping Hiking Fishing Survival Everyday Carry

SPITZKANTE$13.14341 rev

1y ago

SPITZKANTE Neck Knife with Sheath and Necklace X-TAN-K Horizontal Carry Knife with Full Tang Tanto 5Cr14MoV Steel Blade Khaki ABS Handle EDC Outdoor Camping & Hiking

SPITZKANTE$16.39557 rev

1y ago

What buyers say about knife necklace

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

What buyers love

Sharpness23%

“Stays sharp”

Quality-Overall16%

“Great quality knife”

Value For Money10%

“Great knife for the price”

Size-Overall7%

“Not too big”

Advertised Vs Actual Product6%

“Item just as described”

Ease Of Use4%

“very useful”

Grip3%

“The grip is a plus”

Weight Light3%

“Such a decent knife I love the weight of it”

Design-Overall3%

“nice design”

Durability3%

“Seems pretty durable”

What buyers complain about

Size-Overall28%

“Small size”

Sharpness9%

“It does not come sharp”

Durability9%

“Broke in a day”

Quality-Overall8%

“Its not premium quality”

Chain/Key Quality4%

“The chain arrived with a broken clasp”

Value For Money4%

“I feel $38 was a bit of a stretch”

Weight Heavy2%

“knife is top heavy in holster”

Ease Of Use2%

“Really hard to get in”

Advertised Vs Actual Product2%

“Not quite like pictured”

Adhesion/Stickiness1%

“Sticks too hard in sheath”

Top return reasons

Size-Overall41%

Advertised Vs Actual Product14%

Sharpness5%

Quality-Overall5%

Functionality-Overall4%

Wrong Dimensions3%

Defective Material/Parts3%

Ease Of Use3%

Color2%

Neck Fit2%

Common questions

Is knife necklace profitable to sell on Amazon United States?: The niche generates $69K/yr across 40 tracked products. 1 of 5 products launched in the last 360 days are still selling. 90-day search growth is -4.0%. Flapen's verdict: Worth a look (50/100).
How competitive is the knife necklace niche?: 22 brands and 57 sellers compete. The top 5 products take 46% of clicks and top 5 brands hold 63% of demand.
What do buyers complain about in knife necklace?: Top complaints mined from reviews: Size-Overall, Sharpness, Durability. The return rate is 1.7%.
When does demand for knife necklace peak?: Demand peaks in Dec; the busiest month runs 1.5× the quietest.
What does it cost to enter the knife necklace niche?: Listings span $7.42–$64.15; the average listing price is $19.38 (sweet spot $15–$100). The average incumbent carries 1,305 reviews — the moat a new listing must climb.