rainbow knife
Worth a lookShows low returns (0.9%), but a small market ($29K/yr) keeps it on the watch list.
Returns
Incredible0.9%return rate — above 5% kills the launch gate
Competition
Great25%top-5 click share — an open shelf
Avg price
Great$19.95avg listing price — sweet spot $15–$100
Brand share
Great59%top-5 brand share — no brand owns this niche
Price range
Good$5.85–$171.45cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Okay1,966.35avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Okay+10.4%90-day search growth — must beat 0% to launch
Conversion
Bad1.6%search→purchase rate — share of searches ending in a sale
Market size
Bad$29K$29K/yr · 93K searches
According to Flapen's Amazon United States niche tracking, rainbow knife is a $29K/yr Amazon United States market (93K searches/yr). The top 5 brands hold 59% of demand. Demand peaks in Dec. Verdict: Worth a look — 53/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
rainbow knife market data
- Units sold / yr
- 2K–2K
- avg 0–100/product
- Revenue / yr
- $30K–$40K
- units × avg price
- Conversion rate
- 1.6%
- Avg BSR
- #707
- Page quality
- 0%
- Prime
- 94%
- Sponsored
- 58%
- Out of stock
- 5.7%
- Avg brand age
- 56 months
- Avg seller age
- 173 days
Competition & brand share
Clicks spread well past the top 5 (25% combined) — an open shelf where new products get seen.Brands
37 flat
Sellers
85
Top-5 brand share
59%
Top 20: 90%
Top-5 click share
25%
Top 20: 60%
Open market
37%
- Tac-Force40%
- Kershaw5%
- WWZJ5%
- GOOD WORKER5%
- Vividstill5%
- FUNBRO4%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +10.4% search growth over the last 90 days.Peak months: Dec · busiest ÷ quietest = 1.7×
Top rainbow knife search terms
- rainbow knife20K/yr
- tac force knife22K/yr
- rainbow pocket knife14K/yr
- tac force pocket knife10K/yr
- tac force8K/yr
- rainbow knives5K/yr
- pocket knife rainbow3K/yr
- tac force spring assisted knife4K/yr
- tac-force3K/yr
- tac force knives3K/yr
Top rainbow knife 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Tac-Force- Folding Pocket Knife Rainbow TiNite Coated Stainless Steel Blade and Handle Glass Punch and Pocket Clip Tactical EDC Rescue - TF-844
Tac-Force$8.644.4★579 rev
Tac-Force- Folding Pocket Knife Black Partially Serrated Blade with Black and Red Aluminum Handle Rope Cutter Glass Punch and Pocket Clip Tactical EDC Rescue - TF-723FD
Tac-Force$11.844.6★2,561 rev
WWZJ 2 Pack Pocket Knife (Multicolored Titanium) with Key Ring Easy To Everyday Carry Folding Knife Self-Defense
WWZJ$7.684.5★473 rev
Tac-Force- Folding Pocket Knife Partially Serrated Black Stainless Steel Blade with Black Nylon Fiber Handle and Pocket Clip Tactical EDC Rescue - TF-800BK
Tac-Force$8.484.3★989 rev
Kershaw Outcome Pocket Knife Rainbow 2.8 Inch Drop Point Blade
Kershaw$47.284.6★35 rev
Newest
by launch date
Tac-Force Pocket Folding Knife 7.75-Inch Overall Length Red Aluminum Handle 3Cr13MoV Steel Blade Camping Hunting EDC
Tac-Force$12.794 rev
Kershaw Outcome Pocket Knife Rainbow 2.8 Inch Drop Point Blade
Kershaw$47.2835 rev
Premium Hunting Knife with Leather Sheath 4.2 Damascus Style Fixed Blade Knife Rainbow Titanium Coated German High Carbon Steel Two-Tone Wood Handle Unique Outdoor EDC Knife Gift for Men and Women
SAN TONG XIONG$39.8030 rev
Rainbow Keychain Knife Cool Folding Knife Box Cutter Small Pocket Knife Gift for Men Mini EDC Knives for Everyday Carry Small Gift for Women Men
COOL PARD EDC$9.92437 rev
FUNBRO Rainbow Pocket Knife for Men & Women - EDC Folding Knives with Clip
FUNBRO$9.343,769 rev
Trending
90-day click momentum
Maelstrom Mens Tac Force 8 Inch Zipper Tactical Boot Tan 13 W US
Maelstrom$47.814.2★
Tac-Force Pocket Folding Knife 7.75-Inch Overall Length Red Aluminum Handle 3Cr13MoV Steel Blade Camping Hunting EDC
Tac-Force$12.793.8★
Tac-Force- Folding Pocket Knife Black and Satin Finish Partially Serrated Blade Black Aluminum Handle Rope Cutter Glass Punch and Pocket Clip Tactical EDC Rescue - TF-710BK
Tac-Force$11.224.0★
Premium Hunting Knife with Leather Sheath 4.2 Damascus Style Fixed Blade Knife Rainbow Titanium Coated German High Carbon Steel Two-Tone Wood Handle Unique Outdoor EDC Knife Gift for Men and Women
SAN TONG XIONG$39.804.5★
Smith & Wesson CKLPR 5.3in High Carbon S.S. Folding Knife with a 2.3in Drop Point Blade and Rainbow Handle for Outdoor Tactical Survival and EDC
Smith & Wesson$11.254.4★
What buyers say about rainbow knife
What buyers praise and complain about, mined from review topics.What buyers love
“It's sharp”
“Excellent Quality – Makes a Great Gift”
“The colors are cool”
“Great value”
“As advertised”
“easy to operate”
“Nice size”
“Pretty durable”
“the design is great”
“Works perfectly”
What buyers complain about
“Tight”
“it keeps falling apart”
“The knives are not Sharp at all”
“it doesn't open properly”
“Cheap crappy quality”
“The clips are super flimsy and bend easily”
“heavier than I anticipated”
“he doesnt like the grip”
“Twice burned, won't do it again”
“But its craftsmanship doesnt uphold to the look of it”
Top return reasons
Common questions
- Is rainbow knife profitable to sell on Amazon United States?
- The niche generates $29K/yr across 84 tracked products. 1 of 12 products launched in the last 360 days are still selling. 90-day search growth is +10.4%. Flapen's verdict: Worth a look (53/100).
- How competitive is the rainbow knife niche?
- 37 brands and 85 sellers compete. The top 5 products take 25% of clicks and top 5 brands hold 59% of demand.
- What do buyers complain about in rainbow knife?
- Top complaints mined from reviews: Size-Overall, Durability, Sharpness. The return rate is 0.9%.
- When does demand for rainbow knife peak?
- Demand peaks in Dec; the busiest month runs 1.7× the quietest.
- What does it cost to enter the rainbow knife niche?
- Listings span $5.85–$171.45; the average listing price is $19.95 (sweet spot $15–$100). The average incumbent carries 1,966 reviews — the moat a new listing must climb.