retainer case
Skip itPrices mostly outside the sweet spot ($3.34–$10.35) — this niche doesn't clear our bar today.
Returns
Incredible0.3%return rate — above 5% kills the launch gate
Conversion
Great9.7%search→purchase rate — share of searches ending in a sale
Review moat
Good838.75avg incumbent reviews — the moat a new listing must climb
Competition
Okay59%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Brand share
Okay82%top-5 brand share — brands hold most of the demand
Market size
Okay£162K£162K/yr · 301K searches
Growth
Bad-9.7%90-day search growth — must beat 0% to launch
Avg price
Bad£5.56avg listing price — sweet spot $15–$100
Price range
Bad£3.34–£10.35cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, retainer case is a £162K/yr Amazon United Kingdom market (301K searches/yr). The top 5 brands hold 82% of demand. Verdict: Skip it — 45/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
retainer case market data
- Units sold / yr
- 30K–40K
- avg 1,000–1,250/product
- Revenue / yr
- £167K–£222K
- units × avg price
- Conversion rate
- 9.7%
- Avg BSR
- #7
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 60%
- Out of stock
- 2.4%
- Avg brand age
- 26 months
- Avg seller age
- 237 days
Competition & brand share
The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.Brands
13 falling
Sellers
16
Top-5 brand share
82%
Top 20: 100%
Top-5 click share
59%
Top 20: 100%
Open market
15%
- Dental Aesthetics45%
- TIESOME14%
- TUNYINSH12%
- The Pultool6%
- ACSKD5%
- encase3%
- Open — no brand owns it (7 brands, 15%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -9.7% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.1×
Top retainer case search terms
- retainer case224K/yr
- retainer box39K/yr
- retainer cases8K/yr
- retainers case9K/yr
- retainer box case6K/yr
- retainer pot3K/yr
- retainer holder3K/yr
- brace box3K/yr
- brace case3K/yr
- braces case3K/yr
Top retainer case 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 20 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Slim Orthodontic Dental Case - Colour & Glitter Choices for Retainers Bleaching Trays Dentures & More (Grey)
Dental Aesthetics£3.434.5★1,630 rev
Slim Orthodontic Dental Case - Colour & Glitter Choices for Retainers Bleaching Trays Dentures & More (Glitter Pink)
Dental Aesthetics£3.394.5★1,630 rev
Retainer Case Slim Aligner Cases for Invisalign Mouthguard Case with Removal Tools& Aligners Chewies& Brush Removable Inner Tray Silicone for Easy Cleaning (Pink)
TUNYINSH£6.854.7★70 rev
TIESOME Retainer Cases Magnetic Closure Orthodontic Retainer Box Denture Case Slim Braces Case Night Guard Case Container Storage Holder(Pink)
TIESOME£3.434.4★248 rev
ACSKD Retainer Case with Vent Holes Orthodontic Solid Color Aligner Case Suitable for Storage Aligner Dentures Mouth Guard Night Guard 1 PC Black
ACSKD£4.204.8★8 rev
Newest
by launch dateACSKD Retainer Case with Vent Holes Orthodontic Solid Color Aligner Case Suitable for Storage Aligner Dentures Mouth Guard Night Guard 1 PC Black
ACSKD£4.208 rev
Magnetic Retainer Case with Remover Tool Chewies and Brush Orthodontic Dental Mouthguard Box False Teeth Container Denture Holder Case for Braces Bleaching Trays Dentures - Pink
EZEELAI£5.1021 rev
Maoerdental 2PCS Retainer Case Compatible with Invisalign Cute Slim Aligner Case Customized Magnetic Closure Orthodontic Retainer Cases (2 Pack Black + Blue Silicone)
Maoerdental£7.83310 rev
Retainer Case Portable Invisalign case Aligner Case with Magnetic Closure for Adhesive Braces Dental Floss Dental Mouthpieces Splints (black)
Debbery£3.7430 rev
Retainer Case Slim Aligner Cases for Invisalign Mouthguard Case with Removal Tools& Aligners Chewies& Brush Removable Inner Tray Silicone for Easy Cleaning (Pink)
TUNYINSH£6.8570 rev
Trending
90-day click momentumACSKD Retainer Case with Vent Holes Orthodontic Solid Color Aligner Case Suitable for Storage Aligner Dentures Mouth Guard Night Guard 1 PC Black
ACSKD£4.204.8★
Magnetic Retainer Case with Remover Tool Chewies and Brush Orthodontic Dental Mouthguard Box False Teeth Container Denture Holder Case for Braces Bleaching Trays Dentures - Pink
EZEELAI£5.103.7★
TIESOME Retainer Cases Magnetic Closure Orthodontic Retainer Box Denture Case Slim Braces Case Night Guard Case Container Storage Holder(Pink)
TIESOME£3.434.4★
encase Dental Retainer Case with Dental Bath Dual Purpose Hygienic Denture Case for Storage and Immersion of Mouthguards Ortho Retainers + Dental Appliances (Mint Green)
encase£7.304.4★
MURRI&MURRDI Retainer Case Denture Bath Box Travel Retainer Soaking Pot for Cleaning False Teeth Holder Leak Proof Cute Denture Container Cup for Mouth Guard Invisalign Aligner Dental Brace Pink
MURRI&MURRDI£7.644.5★
What buyers say about retainer case
What buyers praise and complain about, mined from review topics.What buyers love
“Good strong quality”
“Good value”
“Easy to use”
“Does the job perfectly”
“the size is just right”
“Hubby very happy with his new denture storage”
“easy to clean”
“Brilliant and strong”
“Sturdy and bright”
“It looks neat and durable”
What buyers complain about
“size issue not fixed”
“my sons broke within a week”
“Could be cheaper or better”
“Rubbish product”
“Looks good, even in the wrong colour”
“Not for full dentures”
“doesnt hold any liquid so not suitable for denture sterilisation”
“the air holes stop the case from getting smelly”
“Design is flawed”
Top return reasons
Common questions
- Is retainer case profitable to sell on Amazon United Kingdom?
- The niche generates £162K/yr across 20 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -9.7%. Flapen's verdict: Skip it (45/100).
- How competitive is the retainer case niche?
- 13 brands and 16 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 82% of demand.
- What do buyers complain about in retainer case?
- Top complaints mined from reviews: Size-Overall, Durability, Value For Money. The return rate is 0.3%.
- When does demand for retainer case peak?
- Demand is steady year-round — the busiest month runs 1.1× the quietest.
- What does it cost to enter the retainer case niche?
- Listings span £3.34–£10.35; the average listing price is £5.56 (sweet spot $15–$100). The average incumbent carries 839 reviews — the moat a new listing must climb.