---
title: "Metroplex — $475K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/pet-supplies/metroplex"
last_updated: "2026-07-21T15:56:05.139Z"
locale: en
meta:
description: "Niche score 44/100 · $475K/yr market · 88K searches/yr · $41.21 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · $475K/yr market · 88K searches/yr · $41.21 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Metroplex — $475K/yr Amazon US Niche (2026) - Flapen"
---
# **metroplex**
**Skip it**
A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Market size 59Growth 17Conversion 96Competition 0Returns 88Price range 76Avg price 95Brand share 0Review moat 69Quality gap 21
**Conversion**
**Incredible****13.1%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Incredible****$41.21**
avg listing price — sweet spot $15–$100
**Returns**
**Great****1.3%**
return rate — above 6% kills the launch gate
**Price range**
**Great****$9.86–$121.26**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Good****721.4**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Good****$475K**
$475K/yr · 88K searches
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-15.8%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****100%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, metroplex is a $475K/yr Amazon United States market (88K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 44/100.
Data updated Jul 17, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **metroplex market data**
- **Units sold / yr**
- **10K–13K**
- avg 1,500–2,000/product
- **Revenue / yr**
- **$412K–$515K**
- units × avg price
- **Launch success**
- **—**
- 0 of 0 new (360d)
- **Conversion rate**
- **13.1%**
- **Avg BSR**
- **#871**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **40%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **76 months**
- **Avg seller age**
- **153 days**
## **Competition & brand share**
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **▼falling
**Sellers**
**33**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**100%**
Top 20: 100%
**Open market**
**0%**
- Seachem52% - ีUSA28% - Seachem Treatments11% - Generic5% - Transformers4%
## **Demand**
Weekly Amazon search volume, last 49 weeks — -15.8% search growth over the last 90 days.
2K1KSpike '25Spike '26Prime Day '26Aug '25Oct '25Nov '25Jan '26Mar '26May '26
[**Open Trend **](https://flapen.com/research/us/pet-supplies/metroplex/trend)
## **Top metroplex search terms**
- **metroplex**31K/yr-15.0%11.5% conv. - **metroplex seachem**16K/yr-17.9%15.9% conv. - **seachem metroplex**15K/yr-9.6%15.6% conv. - **metronidazole for fish**15K/yr-16.0%6.5% conv. - **fish-zole (metronidazole 250mg)**7K/yr-17.2%1.6% conv. - **metroplex fish medication**3K/yr-34.2%17.3% conv. [**All search terms **](https://flapen.com/research/us/pet-supplies/metroplex/search-terms)
## **Top metroplex 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%15%$71K30%$143K45%$214K60%$285K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 5 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Seachem Metronidazole 5 g(0.18 oz)**Seachem**$9.86**4.5★1,034 rev](https://www.amazon.com/dp/B0002A5X8W) [2**Seachem MetroPlex Metronidazole Parasite Bacteria SALTWATER FRESHWATER Aquarium**ีUSA**$11.62**4.6★834 rev](https://www.amazon.com/dp/B01M5LEDRA) [3**Ultimate Aquarium Treatment Bundle Pack - Metroplex Kanaplex Focus Garlic Guard - All in One Aquarium Treatment**Seachem Treatments**$33.78**4.6★837 rev](https://www.amazon.com/dp/B07CN3KT89) [4**Metroplex METRONlDAZOLE Focus Kanaplex Paraguard Neoplex Sulfaplex Polyguard Garlic Guard Saltwater Freshwater Aquarium lnfection ANTlBlOTlC (Metroplex + Kanaplex + Focus)**Generic**$29.52**4.8★66 rev](https://www.amazon.com/dp/B0CPVBBYS5) [5**Transformers Toys Generations Legacy Series Titan Cybertron Universe Metroplex Action Figure - Ages 15 and Up 22-inch**Transformers**$121.26**4.8★836 rev](https://www.amazon.com/dp/B09H14LP4G)
### **Newest**
by launch date
[**Metroplex METRONlDAZOLE Focus Kanaplex Paraguard Neoplex Sulfaplex Polyguard Garlic Guard Saltwater Freshwater Aquarium lnfection ANTlBlOTlC (Metroplex + Kanaplex + Focus)**Generic**$29.52**66 rev2y ago](https://www.amazon.com/dp/B0CPVBBYS5) [**Transformers Toys Generations Legacy Series Titan Cybertron Universe Metroplex Action Figure - Ages 15 and Up 22-inch**Transformers**$121.26**836 rev4y ago](https://www.amazon.com/dp/B09H14LP4G) [**Ultimate Aquarium Treatment Bundle Pack - Metroplex Kanaplex Focus Garlic Guard - All in One Aquarium Treatment**Seachem Treatments**$33.78**837 rev8y ago](https://www.amazon.com/dp/B07CN3KT89) [**Seachem MetroPlex Metronidazole Parasite Bacteria SALTWATER FRESHWATER Aquarium**ีUSA**$11.62**834 rev9y ago](https://www.amazon.com/dp/B01M5LEDRA) [**Seachem Metronidazole 5 g(0.18 oz)**Seachem**$9.86**1,034 rev21y ago](https://www.amazon.com/dp/B0002A5X8W)
### **Trending**
90-day click momentum
[**Seachem Metronidazole 5 g(0.18 oz)**Seachem**$9.86**4.5★**▲ 15%**](https://www.amazon.com/dp/B0002A5X8W) [**Ultimate Aquarium Treatment Bundle Pack - Metroplex Kanaplex Focus Garlic Guard - All in One Aquarium Treatment**Seachem Treatments**$33.78**4.6★**▲ 11%**](https://www.amazon.com/dp/B07CN3KT89) [**Metroplex METRONlDAZOLE Focus Kanaplex Paraguard Neoplex Sulfaplex Polyguard Garlic Guard Saltwater Freshwater Aquarium lnfection ANTlBlOTlC (Metroplex + Kanaplex + Focus)**Generic**$29.52**4.8★**— 1%**](https://www.amazon.com/dp/B0CPVBBYS5) [**Seachem MetroPlex Metronidazole Parasite Bacteria SALTWATER FRESHWATER Aquarium**ีUSA**$11.62**4.6★**▼ 12%**](https://www.amazon.com/dp/B01M5LEDRA) [**Transformers Toys Generations Legacy Series Titan Cybertron Universe Metroplex Action Figure - Ages 15 and Up 22-inch**Transformers**$121.26**4.8★**▼ 54%**](https://www.amazon.com/dp/B09H14LP4G)
## **What buyers say about metroplex**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**23%
*“Good value”*
**Quality-Overall**18%
*“Good quality”*
**Ease Of Use**12%
*“Effective and easy”*
**Advertised Vs Actual Product**7%
*“Seems to work”*
**Instructions/User Manual/Troubleshooting**6%
*“This product works great when following instructions”*
**Ingredients-Overall**6%
*“Thank you the seller who combined this three products”*
**Size-Overall**6%
*“its really tall it was amazing”*
**Fun/Entertainment Experience**5%
*“And yet, he was fun to transform”*
**Design-Overall**3%
*“Works as designed”*
**Compatibility-Overall**2%
*“Works fine with my tank”*
### **What buyers complain about **
**Size-Overall**22%
*“It's very very big”*
**Ease Of Use**18%
*“Never easy to use”*
**Leak-Proof**7%
*“I was a little worried after seeing all the negative reviews about spilled/low filled products”*
**Value For Money**7%
*“Less amount”*
**Advertised Vs Actual Product**7%
*“not what it says it is”*
**Functionality-Overall**7%
*“they weren't working”*
**Allergies**7%
*“Our goldfish got an ammonia rash”*
**Weight Heavy**4%
*“Little bit top heavy”*
### **Top return reasons **
**Advertised Vs Actual Product**25%
**Functionality-Overall**25%
**Product Condition**15%
**Value For Money**13%
**Defective Material/Parts**5%
**Leak-Proof**4%
**Compatibility-Overall**3%
**Ingredients-Overall**3%
**Size-Overall**2%
**Residue**1%
## **Common questions**
- **Is metroplex profitable to sell on Amazon United States?**
- The niche generates $475K/yr across 5 tracked products. 90-day search growth is -15.8%. Flapen's verdict: Skip it (44/100).
- **How competitive is the metroplex niche?**
- 5 brands and 33 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in metroplex?**
- Top complaints mined from reviews: Size-Overall, Ease Of Use, Leak-Proof. The return rate is 1.3%.
- **What does it cost to enter the metroplex niche?**
- Listings span $9.86–$121.26; the average listing price is $41.21 (sweet spot $15–$100). The average incumbent carries 721 reviews — the moat a new listing must climb.
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