---
title: "Rp32104 — $44K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/rp32104"
last_updated: "2026-08-08T16:08:12.790Z"
locale: en
meta:
description: "Niche score 39/100 · $44K/yr market · 11K searches/yr · $27.43 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 39/100 · $44K/yr market · 11K searches/yr · $27.43 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Rp32104 — $44K/yr Amazon US Niche (2026) - Flapen"
---
# **rp32104**
**Skip it**
A concentrated shelf (top 5 take 95% of clicks) — this niche doesn't clear our bar today.
Market size 11Growth 21Conversion 97Competition 4Returns 18Price range 95Avg price 95Brand share 13Review moat 90Quality gap 70
**Conversion**
**Incredible****14.7%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Incredible****$27.43**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$21.05–$56.91**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Great****190.86**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-8.7%**
90-day search growth — must beat 0% to launch
**Returns**
**Bad****7.0%**
return rate — above 5% kills the launch gate
**Brand share**
**Bad****95%**
top-5 brand share — brand-locked demand
**Market size**
**Bad****$44K**
$44K/yr · 11K searches
**Competition**
**Bad****95%**
top-5 click share — a locked-up shelf
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, rp32104 is a $44K/yr Amazon United States market (11K searches/yr). The top 5 brands hold 95% of demand. Verdict: Skip it — 39/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **rp32104 market data**
- **Units sold / yr**
- **2K–2K**
- avg 100–250/product
- **Revenue / yr**
- **$41K–$55K**
- units × avg price
- **Conversion rate**
- **14.7%**
- **Avg BSR**
- **#193**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **86%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **41 months**
- **Avg seller age**
- **164 days**
## **Competition & brand share**
The top 5 products capture 95% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**7 **▼falling
**Sellers**
**25**
**Top-5 brand share**
**95%**
Top 20: 100%
**Top-5 click share**
**95%**
Top 20: 100%
**Open market**
**3%**
- DELTA35% - Miory29% - BOSRUIDA15% - Vayolli8% - RILDWO7% - TOVEN-RV3% - Open — no brand owns it (1 brand, 3%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -8.7% search growth over the last 90 days.
300200Spike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/rp32104/trend)
## **Top rp32104 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%$4K20%$9K30%$13K40%$18K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 7 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Delta Faucet RP32104 Monitor 17 Series Cartridge Assembly**DELTA**$56.91**4.7★1,064 rev](https://www.amazon.com/dp/B000UB62FQ) [2**RP32104 Shower Cartridge Compatible with Delta Monitor 1700 series(1998-2005) Showers Easy to Install rp32104 Cartridge Replacement Including the RP32104 Cartridge and Parts**Miory**$22.38**4.2★110 rev](https://www.amazon.com/dp/B0CP4VL1HP) [3**RP32104 Shower Cartridge Compatible With Delta 1700Series Faucet Cartridge**BOSRUIDA**$22.63**4.9★18 rev](https://www.amazon.com/dp/B0F4WLNBQK) [4**RP32104 Shower Cartridge Compatible with Delta Monitor 1700 series (1998-2005) Cartridge for delta Monitor Shower Cartridge for Tub/Shower Faucet Valve**Vayolli**$23.93**4.4★42 rev](https://www.amazon.com/dp/B0DS8NVGDV) [5**RILDWO RP32104 Shower Cartridge Replacement Compatible with Delta Monitor 1700/1800 Series (1998-2005) Dual-Function Pressure Balance Valve Repair Kit with Seats & Springs**RILDWO**$21.05**3.9★25 rev](https://www.amazon.com/dp/B0F88PWLCS)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**RILDWO RP32104 Shower Cartridge Replacement Compatible with Delta Monitor 1700/1800 Series (1998-2005) Dual-Function Pressure Balance Valve Repair Kit with Seats & Springs**RILDWO**$21.05**25 rev1y ago](https://www.amazon.com/dp/B0F88PWLCS) [**RP32104 Shower Cartridge Compatible With Delta 1700Series Faucet Cartridge**BOSRUIDA**$22.63**18 rev1y ago](https://www.amazon.com/dp/B0F4WLNBQK) [**RP32104 Shower Cartridge Compatible with Delta Monitor 1700 series (1998-2005) Cartridge for delta Monitor Shower Cartridge for Tub/Shower Faucet Valve**Vayolli**$23.93**42 rev1y ago](https://www.amazon.com/dp/B0DS8NVGDV) [**RP32104 Shower Cartridge Replacement Compatible with Delta Monitor 1700 series(1998-2005) Cartridge RP32104 Assembly for Bath Tub/Shower Faucet Valve**Tanxury**$21.23**14 rev1y ago](https://www.amazon.com/dp/B0DRYJ384V) [**RP32104 Shower Cartridge Compatible with Delta Monitor 1700 Series Showers**TOVEN-RV**$23.84**63 rev1y ago](https://www.amazon.com/dp/B0DKBCBFVH)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**RP32104 Shower Cartridge Replacement Compatible with Delta Monitor 1700 series(1998-2005) Cartridge RP32104 Assembly for Bath Tub/Shower Faucet Valve**Tanxury**$21.23**4.0★**▲ 116%**](https://www.amazon.com/dp/B0DRYJ384V) [**RP32104 Shower Cartridge Compatible With Delta 1700Series Faucet Cartridge**BOSRUIDA**$22.63**4.9★**▲ 46%**](https://www.amazon.com/dp/B0F4WLNBQK) [**RILDWO RP32104 Shower Cartridge Replacement Compatible with Delta Monitor 1700/1800 Series (1998-2005) Dual-Function Pressure Balance Valve Repair Kit with Seats & Springs**RILDWO**$21.05**3.9★**▲ 11%**](https://www.amazon.com/dp/B0F88PWLCS) [**RP32104 Shower Cartridge Compatible with Delta Monitor 1700 series(1998-2005) Showers Easy to Install rp32104 Cartridge Replacement Including the RP32104 Cartridge and Parts**Miory**$22.38**4.2★**— 5%**](https://www.amazon.com/dp/B0CP4VL1HP) [**Delta Faucet RP32104 Monitor 17 Series Cartridge Assembly**DELTA**$56.91**4.7★**— 1%**](https://www.amazon.com/dp/B000UB62FQ)
**~~View all trending →~~**
## **What buyers say about rp32104**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**33%
*“Exact fit”*
**Advertised Vs Actual Product**14%
*“Did its job”*
**Value For Money**10%
*“the price is worth it”*
**Assembly/Installation**9%
*“Easy install”*
**Leak-Proof**7%
*“Fixed my shower leak”*
**Efficiency**6%
*“Works great”*
**Ease Of Use**4%
*“Easy to use, extra parts for different models and works perfectly”*
**Quality-Overall**2%
*“Great product”*
**Functionality-Overall**1%
*“Works great”*
**Rusts/Corrodes**1%
*“Easy to install as long as your fixture is not corroded”*
### **What buyers complain about **
**Durability**13%
*“Broke trying to turn the shower on 30 days later”*
**Functionality-Overall**12%
*“it just wouldn't go”*
**Instructions/User Manual/Troubleshooting**9%
*“Instructions are minimal”*
**Assembly/Installation**8%
*“It was complicated by Delta including a mangled spring in the kit”*
**Noise Level**6%
*“Squeaky,”*
**Quality-Overall**4%
*“Not good quality broken 30 days”*
**Product Condition**4%
*“The part arrived open, used, and parts missing”*
**Ease Of Use**4%
*“Not useable”*
**Compatibility-Overall**2%
*“it is not compatible”*
**Defective Material/Parts**2%
*“Worth the extra cash for a part made by Delta”*
### **Top return reasons **
**Size-Overall**32%
**Compatibility-Overall**19%
**Defective Material/Parts**9%
**Leak-Proof**7%
**Assembly/Installation**6%
**Functionality-Overall**5%
**Advertised Vs Actual Product**5%
**Product Condition**4%
**Value For Money**3%
**Maintenance And Repair**2%
## **Common questions**
- **Is rp32104 profitable to sell on Amazon United States?**
- The niche generates $44K/yr across 7 tracked products. 90-day search growth is -8.7%. Flapen's verdict: Skip it (39/100).
- **How competitive is the rp32104 niche?**
- 7 brands and 25 sellers compete. The top 5 products take 95% of clicks and top 5 brands hold 95% of demand.
- **What do buyers complain about in rp32104?**
- Top complaints mined from reviews: Durability, Functionality-Overall, Instructions/User Manual/Troubleshooting. The return rate is 7.0% — above our launch gate.
- **When does demand for rp32104 peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the rp32104 niche?**
- Listings span $21.05–$56.91; the average listing price is $27.43 (sweet spot $15–$100). The average incumbent carries 191 reviews — the moat a new listing must climb.
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