---
title: "Black Death Mega Sour Sweets — £31K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/grocery/black-death-mega-sour-sweets"
last_updated: "2026-07-31T12:10:12.953Z"
locale: en
meta:
description: "Niche score 42/100 · £31K/yr market · 85K searches/yr · £9.05 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 42/100 · £31K/yr market · 85K searches/yr · £9.05 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Black Death Mega Sour Sweets — £31K/yr Amazon UK Niche (2026) - Flapen"
---
# **black death mega sour sweets**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 8Growth 37Conversion 50Competition 19Returns 100Price range 44Avg price 25Brand share 0Review moat 89Quality gap 98
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Quality gap**
**Incredible****3.7★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Great****228.8**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Okay****4.0%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Okay****£5.42–£22.49**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Okay****+9.6%**
90-day search growth — must beat 0% to launch
**Avg price**
**Okay****£9.05**
avg listing price — sweet spot $15–$100
**Competition**
**Bad****78%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****£31K**
£31K/yr · 85K searches
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Signals**[** Quality Gap**](https://flapen.com/research/niches?market=uk&signal=quality_gap "Avg rating < 4.0")
According to Flapen's Amazon United Kingdom niche tracking, black death mega sour sweets is a £31K/yr Amazon United Kingdom market (85K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Nov–Dec. Verdict: Skip it — 42/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **black death mega sour sweets market data**
- **Units sold / yr**
- **3K–4K**
- avg 100–250/product
- **Revenue / yr**
- **£27K–£36K**
- units × avg price
- **Conversion rate**
- **4.0%**
- **Avg BSR**
- **#9**
- **Page quality**
- **0%**
- **Prime**
- **80%**
- **Sponsored**
- **100%**
- **Out of stock**
- **10.9%**
- **Avg brand age**
- **49 months**
- **Avg seller age**
- **168 days**
## **Competition & brand share**
The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **—flat
**Sellers**
**9**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**78%**
Top 20: 100%
**Open market**
**0%**
- Barnetts59% - MyCandyShop29% - Devils Chip Challenge5% - Retro Sweet Kings4% - iBrandz3%
## **Demand & seasonality**
Weekly Amazon search volume, last 87 weeks — +9.6% search growth over the last 90 days.
5K3KSpike '25Holiday '25Spike '26 seasonDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Nov, Dec · busiest ÷ quietest = 2.4×
[**Open Trend **](https://flapen.com/research/uk/grocery/black-death-mega-sour-sweets/trend)
## **Top black death mega sour sweets search terms**
- **black death sour candy**29K/yr+19.6%1.9% conv. - **mega sour sweets**12K/yr-8.5%4.0% conv. - **worlds sourest sweets**9K/yr-2.8%2.9% conv. - **barnetts mega sour sweets**6K/yr+7.9%5.9% conv. - **sourest candy in the world**3K/yr+141.9%2.8% conv. - **sour balls**5K/yr-5.2%2.4% conv. - **super sour sweets challenge**4K/yr+43.4%5.6% conv. - **most sour sweets in the world**3K/yr-7.1%4.1% conv. - **world sourest candy**1K/yr+131.5%2.2% conv. - **mr simms black death sweets**2K/yr+27.6%1.0% conv. [**All search terms **](https://flapen.com/research/uk/grocery/black-death-mega-sour-sweets/search-terms)
## **Top black death mega sour sweets 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%£3K20%£6K30%£9K40%£12K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 15 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**MyCandyShop Stupidly Sour Sweets 250g - Raspberry - Worlds Sourest Sweets -Intense Coating British Made Boiled Sour Candy- Great For Extreme Challenges**MyCandyShop**£6.92**4.0★743 rev](https://www.amazon.co.uk/dp/B0DBR8MP4B) [2**Barnetts - Mega Sour Candy Raspberry 104g - Trendy Sweet Bags - Traditionally Handmade Sweets - Sour Coating Lasts 20 Seconds - Candies for Party Bag Gift Hamper or Hamper Box**Barnetts**£5.55**4.2★868 rev](https://www.amazon.co.uk/dp/B0F1NHLLKY) [3**Barnetts - Mega Sour Candy Fruits 104g - Trendy Sweet Bags - Traditionally Handmade Sweets - Sour Coating Lasts 20 Seconds - Candies for Party Bag Gift Hamper or Hamper Box**Barnetts**£5.42**4.0★134 rev](https://www.amazon.co.uk/dp/B0F1NLPYXR) [4**4 Pack Bundle Barnetts Mega Sour Candy - Raspberry | Fruits | Apple | Watermelon - Trendy Sweet Bags - Traditionally Handmade Sweets (104g x 4)**Barnetts**£15.98**4.4★94 rev](https://www.amazon.co.uk/dp/B0FLYNXMC4) [5**Barnetts Mega Sour Fruits 500g**Barnetts**£10.03**4.0★57 rev](https://www.amazon.co.uk/dp/B071FC8C9J)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**4 Pack Bundle Barnetts Mega Sour Candy - Raspberry | Fruits | Apple | Watermelon - Trendy Sweet Bags - Traditionally Handmade Sweets (104g x 4)**Barnetts**£15.98**94 rev11mo ago](https://www.amazon.co.uk/dp/B0FLYNXMC4) [**3 Pack Bundle Barnetts Mega Sour Candy - Raspberry | Fruits | Apple - Trendy Sweet Bags - Traditionally Handmade Sweets (104g x 3)**Barnetts**£12.64**19 rev11mo ago](https://www.amazon.co.uk/dp/B0FLYCF4G8) [**Devils Super Sour Challenge Candy Extreme Sour Sweet Gift Box (3 Pack) | Fun Party Challenge Sweets for Kids & Adults | Halloween Christmas & Birthday Gag Gift**Devils Chip Challenge**£6.76**46 rev11mo ago](https://www.amazon.co.uk/dp/B0FLQN6QN6) [**Super Sour Sweet Gift Box Hamper American Candy. Extreme Sour selection**iBrandz**£6.54**84 rev1y ago](https://www.amazon.co.uk/dp/B0F99V86W9) [**Barnetts - Mega Sour Candy Raspberry 104g - Trendy Sweet Bags - Traditionally Handmade Sweets - Sour Coating Lasts 20 Seconds - Candies for Party Bag Gift Hamper or Hamper Box**Barnetts**£5.55**868 rev1y ago](https://www.amazon.co.uk/dp/B0F1NHLLKY)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Mega Sours Raspberry Sweets 200g Bag Pouch**Retro Sweet Kings**£8.32**1.0★**▲ 98%**](https://www.amazon.co.uk/dp/B0DYZMSCVP) [**4 Pack Bundle Barnetts Mega Sour Candy - Raspberry | Fruits | Apple | Watermelon - Trendy Sweet Bags - Traditionally Handmade Sweets (104g x 4)**Barnetts**£15.98**4.4★**▲ 69%**](https://www.amazon.co.uk/dp/B0FLYNXMC4) [**Barnetts - Mega Sour Candy Cola 104g - Trendy Sweet Bags - Traditionally Handmade Sweets - Sour Coating Lasts 20 Seconds - Candies for Party Bag Gift Hamper or Hamper Box**Barnetts**£5.52**3.9★**▲ 63%**](https://www.amazon.co.uk/dp/B0F1GB7XLZ) [**Barnetts - Mega Sour Candy Raspberry 250g - Trendy Sweet Bags - Traditionally Handmade Sweets - Sour Coating Lasts 20 Seconds - Candies for Party Bag Gift Hamper or Hamper Box**Barnetts**£7.56**4.2★**▲ 42%**](https://www.amazon.co.uk/dp/B0DT9W26TS) [**Barnetts Mega Sour Fruits 500g**Barnetts**£10.03**4.0★**▲ 41%**](https://www.amazon.co.uk/dp/B071FC8C9J)
**~~View all trending →~~**
## **What buyers say about black death mega sour sweets**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Sour**49%
*“Sour”*
**Sweetness**11%
*“it was sweet”*
**Value For Money**8%
*“Excellent value”*
**Taste-Overall**5%
*“They're delicious”*
**Blend/Ratio**3%
*“A good mixture”*
**Gifting Purpose**3%
*“all in a box easy to wrap as a gift so giftability was easy there was variety”*
**Health Benefits-Overall**3%
*“Wellbeing”*
**Durability**2%
*“Nice Alternative which lasts for weeks”*
**Quality-Overall**2%
*“Quality and Quantity within the bag can keep you going for days so it's definitely worth it”*
### **What buyers complain about **
**Sour**55%
*“Actually Sour”*
**Size-Overall**12%
*“THESE WERE ABSOLUTELY GROTESQUE 🤮 These were absolutely grotesque”*
**Value For Money**9%
*“Not worth the money”*
**Advertised Vs Actual Product**6%
*“FALSE ADVERTISING”*
**Sweetness**5%
*“theyre hard sweets”*
**Quality-Overall**2%
*“Utter trash”*
**Taste-Overall**2%
*“They tastes so bad”*
**Storage Temperature**2%
*“opened it and it was yellow and clearly it had melted in some way”*
**Artificial Sweeteners**1%
*“certainly foul tasting. burnt sugar”*
## **Common questions**
- **Is black death mega sour sweets profitable to sell on Amazon United Kingdom?**
- The niche generates £31K/yr across 15 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is +9.6%. Flapen's verdict: Skip it (42/100).
- **How competitive is the black death mega sour sweets niche?**
- 5 brands and 9 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in black death mega sour sweets?**
- Top complaints mined from reviews: Sour, Size-Overall, Value For Money. The return rate is 0.0%.
- **When does demand for black death mega sour sweets peak?**
- Demand peaks in Nov–Dec; the busiest month runs 2.4× the quietest.
- **What does it cost to enter the black death mega sour sweets niche?**
- Listings span £5.42–£22.49; the average listing price is £9.05 (sweet spot $15–$100). The average incumbent carries 229 reviews — the moat a new listing must climb.
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