---
title: "Retainer Case — £162K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/business-industry-science/retainer-case"
last_updated: "2026-07-31T19:46:02.342Z"
locale: en
meta:
description: "Niche score 45/100 · £162K/yr market · 301K searches/yr · £5.56 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 45/100 · £162K/yr market · 301K searches/yr · £5.56 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Retainer Case — £162K/yr Amazon UK Niche (2026) - Flapen"
---
# **retainer case**
**Skip it**
Prices mostly outside the sweet spot ($3.34–$10.35) — this niche doesn't clear our bar today.
Market size 34Growth 20Conversion 86Competition 43Returns 98Price range 0Avg price 15Brand share 38Review moat 67Quality gap 43
**Returns**
**Incredible****0.3%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****9.7%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****838.75**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Okay****59%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****82%**
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****£5.56**
avg listing price — sweet spot $15–$100
**Price range**
**Bad****£3.34–£10.35**
cheapest 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 ~~](https://flapen.com/research/methodology)
## **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.
6K4K seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.1×
[**Open Trend **](https://flapen.com/research/uk/business-industry-science/retainer-case/trend)
## **Top retainer case search terms**
- **retainer case**224K/yr-8.8%8.4% conv. - **retainer box**39K/yr-26.5%6.1% conv. - **retainer cases**8K/yr+15.6%0.9% conv. - **retainers case**9K/yr-6.4%6.5% conv. - **retainer box case**6K/yr+5.6%9.8% conv. - **retainer pot**3K/yr+20.5%5.3% conv. - **retainer holder**3K/yr+5.3%9.5% conv. - **brace box**3K/yr-22.0%5.7% conv. - **brace case**3K/yr+6.7%9.1% conv. - **braces case**3K/yr-23.9%7.7% conv. [**All search terms **](https://flapen.com/research/uk/business-industry-science/retainer-case/search-terms)
## **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.
0%10%£16K20%£32K30%£49K40%£65K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 20 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Slim Orthodontic Dental Case - Colour & Glitter Choices for Retainers Bleaching Trays Dentures & More (Grey)**Dental Aesthetics**£3.43**4.5★1,630 rev](https://www.amazon.co.uk/dp/B09KM6DXLX) [2**Slim Orthodontic Dental Case - Colour & Glitter Choices for Retainers Bleaching Trays Dentures & More (Glitter Pink)**Dental Aesthetics**£3.39**4.5★1,630 rev](https://www.amazon.co.uk/dp/B01JH0XD5M) [3**Retainer Case Slim Aligner Cases for Invisalign Mouthguard Case with Removal Tools& Aligners Chewies& Brush Removable Inner Tray Silicone for Easy Cleaning (Pink)**TUNYINSH**£6.85**4.7★70 rev](https://www.amazon.co.uk/dp/B0F18174PZ) [4**TIESOME Retainer Cases Magnetic Closure Orthodontic Retainer Box Denture Case Slim Braces Case Night Guard Case Container Storage Holder(Pink)**TIESOME**£3.43**4.4★248 rev](https://www.amazon.co.uk/dp/B0DG2L7KPC) [5**ACSKD Retainer Case with Vent Holes Orthodontic Solid Color Aligner Case Suitable for Storage Aligner Dentures Mouth Guard Night Guard 1 PC Black**ACSKD**£4.20**4.8★8 rev](https://www.amazon.co.uk/dp/B0GY3YCVQQ)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**ACSKD Retainer Case with Vent Holes Orthodontic Solid Color Aligner Case Suitable for Storage Aligner Dentures Mouth Guard Night Guard 1 PC Black**ACSKD**£4.20**8 rev3mo ago](https://www.amazon.co.uk/dp/B0GY3YCVQQ) [**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**£5.10**21 rev11mo ago](https://www.amazon.co.uk/dp/B0FKB81NLY) [**Maoerdental 2PCS Retainer Case Compatible with Invisalign Cute Slim Aligner Case Customized Magnetic Closure Orthodontic Retainer Cases (2 Pack Black + Blue Silicone)**Maoerdental**£7.83**310 rev1y ago](https://www.amazon.co.uk/dp/B0F1SVX9JC) [**Retainer Case Portable Invisalign case Aligner Case with Magnetic Closure for Adhesive Braces Dental Floss Dental Mouthpieces Splints (black)**Debbery**£3.74**30 rev1y ago](https://www.amazon.co.uk/dp/B0F1N38D8G) [**Retainer Case Slim Aligner Cases for Invisalign Mouthguard Case with Removal Tools& Aligners Chewies& Brush Removable Inner Tray Silicone for Easy Cleaning (Pink)**TUNYINSH**£6.85**70 rev1y ago](https://www.amazon.co.uk/dp/B0F18174PZ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**ACSKD Retainer Case with Vent Holes Orthodontic Solid Color Aligner Case Suitable for Storage Aligner Dentures Mouth Guard Night Guard 1 PC Black**ACSKD**£4.20**4.8★**▲ 289%**](https://www.amazon.co.uk/dp/B0GY3YCVQQ) [**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**£5.10**3.7★**▲ 145%**](https://www.amazon.co.uk/dp/B0FKB81NLY) [**TIESOME Retainer Cases Magnetic Closure Orthodontic Retainer Box Denture Case Slim Braces Case Night Guard Case Container Storage Holder(Pink)**TIESOME**£3.43**4.4★**▲ 140%**](https://www.amazon.co.uk/dp/B0DG2L7KPC) [**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**£7.30**4.4★**▲ 101%**](https://www.amazon.co.uk/dp/B09TFZWZB7) [**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**£7.64**4.5★**▲ 81%**](https://www.amazon.co.uk/dp/B0C1P4GYN1)
**~~View all trending →~~**
## **What buyers say about retainer case**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**25%
*“Good strong quality”*
**Value For Money**12%
*“Good value”*
**Ease Of Use**8%
*“Easy to use”*
**Advertised Vs Actual Product**7%
*“Does the job perfectly”*
**Size-Overall**6%
*“the size is just right”*
**Storage Capacity**6%
*“Hubby very happy with his new denture storage”*
**Ease Of Cleaning**3%
*“easy to clean”*
**Strength**3%
*“Brilliant and strong”*
**Brightness/Shine/Glow**3%
*“Sturdy and bright”*
**Durability**3%
*“It looks neat and durable”*
### **What buyers complain about **
**Size-Overall**32%
*“size issue not fixed”*
**Durability**11%
*“my sons broke within a week”*
**Value For Money**10%
*“Could be cheaper or better”*
**Quality-Overall**7%
*“Rubbish product”*
**Color**6%
*“Looks good, even in the wrong colour”*
**Oral Hygiene**6%
*“Not for full dentures”*
**Disinfection**6%
*“doesnt hold any liquid so not suitable for denture sterilisation”*
**Smell**6%
*“the air holes stop the case from getting smelly”*
**Design-Overall**3%
*“Design is flawed”*
### **Top return reasons **
**Size-Overall**69%
**Color**6%
**Functionality-Overall**3%
**Leak-Proof**3%
**Quality-Overall**3%
**Product Condition**2%
**Compatibility-Overall**2%
**Advertised Vs Actual Product**2%
**Thickness**2%
**Defective Material/Parts**1%
## **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.
## **Related niches in Business, Industry & Science**
- 66 [**chicken toys**](https://flapen.com/research/uk/business-industry-science/chicken-toys)£45K/yr+30.1%**Worth a look**- 66 [**optics for home bar**](https://flapen.com/research/uk/business-industry-science/optics-for-home-bar)£197K/yr+50.8%**Worth a look**- 66 [**ramp**](https://flapen.com/research/uk/business-industry-science/ramp)£327K/yr+18.2%**Worth a look**- 66 [**artificial grass hoover**](https://flapen.com/research/uk/business-industry-science/artificial-grass-hoover)£373K/yr+133.1%**Worth a look**- 67 [**picket fence**](https://flapen.com/research/uk/business-industry-science/picket-fence)£107K/yr+33.0%**Worth a look**- 67 [**sack barrow wheels**](https://flapen.com/research/uk/business-industry-science/sack-barrow-wheels)£74K/yr+28.8%**Worth a look**[**All Business, Industry & Science niches **](https://flapen.com/research/uk/business-industry-science)