mooncup
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.2%return rate — above 5% kills the launch gate
Conversion
Great9.4%search→purchase rate — share of searches ending in a sale
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Avg price
Good£12.61avg listing price — sweet spot $15–$100
Price range
Okay£2.41–£21.95cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Okay3,828.06avg incumbent reviews — the moat a new listing must climb
Growth
Bad-1.7%90-day search growth — must beat 0% to launch
Competition
Bad73%top-5 click share — a locked-up shelf
Market size
Bad£77K£77K/yr · 65K searches
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, mooncup is a £77K/yr Amazon United Kingdom market (65K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Aug. Verdict: Skip it — 42/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
mooncup market data
- Units sold / yr
- 5K–6K
- avg 100–250/product
- Revenue / yr
- £63K–£76K
- units × avg price
- Conversion rate
- 9.4%
- Avg BSR
- #49
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 94%
- Out of stock
- 4.2%
- Avg brand age
- 55 months
- Avg seller age
- 205 days
Competition & brand share
The top 5 products capture 73% of clicks — a locked-up shelf that new listings rarely crack.Brands
5 falling
Sellers
12
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
73%
Top 20: 100%
Open market
0%
- Mooncup81%
- SHORDY11%
- KAVODA5%
- PEESAFE2%
- EcoBlossom2%
- Open — no brand owns it (0%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -1.7% search growth over the last 90 days.Peak months: Aug · busiest ÷ quietest = 1.7×
Top mooncup search terms
- mooncup28K/yr
- moon cup19K/yr
- moon cups for periods11K/yr
- mooncup menstrual cup7K/yr
Top mooncup 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 16 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Mooncup High Waist Period Pants - Eco-Friendly Organic Cotton Period Underwear with Maximum Absorbency (Up to 10 Tampons) 180 Coverage - Leak-proof Reusable & Comfortable for Heavy Flow - Size 10
Mooncup£17.194.1★45 rev
Mooncup Original Menstrual Cup - Medical-Grade Silicone Period Cup for Protection - Holds 3 Tampons Worth of Fluid - Toxin-Free Eco-Friendly & Easy to Insert - Size A (for 30+ or Post-Childbirth)
Mooncup£18.854.4★3,481 rev
Mooncup Original Menstrual Cup - Medical-Grade Silicone Period Cup for Protection - Holds 3 Tampons Worth of Fluid - Toxin-Free Eco-Friendly & Easy to Insert - Size B (Under 30 or No Vaginal Birth)
Mooncup£18.314.4★3,481 rev
Shordy Menstrual Cups First Period Starter Pack of 2 Kit with Mini Box Period Cup Medical Grade Silicone Feminine Hygiene Better Alternative to Sanitary Pads & Tampons for Girls - Small & Large
SHORDY£12.804.3★8,717 rev
Mooncup High Waist Period Pants - Eco-Friendly Organic Cotton Period Underwear with Maximum Absorbency (Up to 10 Tampons) 180 Coverage - Leak-proof Reusable & Comfortable for Heavy Flow - Size 8
Mooncup£16.854.1★45 rev
Newest
by launch dateMooncup High Waist Period Pants - Eco-Friendly Organic Cotton Period Underwear with Maximum Absorbency (Up to 10 Tampons) 180 Coverage - Leak-proof Reusable & Comfortable for Heavy Flow - Size 10
Mooncup£17.1945 rev
Mooncup High Waist Period Pants - Eco-Friendly Organic Cotton Period Underwear with Maximum Absorbency (Up to 10 Tampons) 180 Coverage - Leak-proof Reusable & Comfortable for Heavy Flow - Size 8
Mooncup£16.8545 rev
Mooncup Low Waist Period Pants - Eco-Friendly Organic Cotton Period Underwear with Maximum Absorbency (Up to 10 Tampons) 180 Coverage Leak-proof Reusable & Comfortable for Heavy Flow - Size 16
Mooncup£17.6145 rev
Mooncup Low Waist Period Pants - Eco-Friendly Organic Cotton Period Underwear with Maximum Absorbency (Up to 10 Tampons) 180 Coverage Leak-proof Reusable & Comfortable for Heavy Flow - Size 14
Mooncup£17.2045 rev
Mooncup Pads with Wings - Biodegradable Pads Made with Organic Cotton for Irritation-Free Period Care Leak-Proof Plastic-Free Highly Absorbent Protection for Sensitive Skin - Medium/Day 10 Count
Mooncup£2.41386 rev
Trending
90-day click momentumMooncup High Waist Period Pants - Eco-Friendly Organic Cotton Period Underwear with Maximum Absorbency (Up to 10 Tampons) 180 Coverage - Leak-proof Reusable & Comfortable for Heavy Flow - Size 10
Mooncup£17.194.1★
Mooncup High Waist Period Pants - Eco-Friendly Organic Cotton Period Underwear with Maximum Absorbency (Up to 10 Tampons) 180 Coverage - Leak-proof Reusable & Comfortable for Heavy Flow - Size 8
Mooncup£16.854.1★
Mooncup Low Waist Period Pants - Eco-Friendly Organic Cotton Period Underwear with Maximum Absorbency (Up to 10 Tampons) 180 Coverage Leak-proof Reusable & Comfortable for Heavy Flow - Size 16
Mooncup£17.614.1★
Ecoblossom Small &Large Menstrual Cups - Medical-Grade Silicone Comfortable Leak-Proof Period Protection Up to 12 Hours. Pack of 1 Small Cup 22mL Capacity and 1 Large Menstrual Cup 30mL Capacity
EcoBlossom£10.504.4★
Mooncup Low Waist Period Pants - Eco-Friendly Organic Cotton Period Underwear with Maximum Absorbency (Up to 10 Tampons) 180 Coverage Leak-proof Reusable & Comfortable for Heavy Flow - Size 14
Mooncup£17.204.1★
What buyers say about mooncup
What buyers praise and complain about, mined from review topics.What buyers love
“Decent quality”
“never leaks”
“Very comfortable”
“Good price”
“I definitely recommend getting this its great it fits brilliantly I have no trouble putting in or taking out its really easy”
“The top layer of cotton is pleasant to the body”
“they have held up well during a heavy day”
“Very easy to use”
“effective”
“one of the most important thing for me is that i didn't had irritation after”
What buyers complain about
“Leaked”
“can be tough to get into position”
“I would say the silicone is more rigid than my favourite brand so are a bit more”
“not overly comfortable”
“Don't hold alot”
“expensive for 1 pair”
“Ive been struggling with irritation for years”
“Slightly hard”
“The tail is too short”
“which makes it painful to put in and very painful to pull out”
Top return reasons
Common questions
- Is mooncup profitable to sell on Amazon United Kingdom?
- The niche generates £77K/yr across 16 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -1.7%. Flapen's verdict: Skip it (42/100).
- How competitive is the mooncup niche?
- 5 brands and 12 sellers compete. The top 5 products take 73% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in mooncup?
- Top complaints mined from reviews: Leak-Proof, Ease Of Use, Stiffness. The return rate is 0.2%.
- When does demand for mooncup peak?
- Demand peaks in Aug; the busiest month runs 1.7× the quietest.
- What does it cost to enter the mooncup niche?
- Listings span £2.41–£21.95; the average listing price is £12.61 (sweet spot $15–$100). The average incumbent carries 3,828 reviews — the moat a new listing must climb.