---
title: "300 Gallon Outdoor Storage Box — $94K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/300-gallon-outdoor-storage-box"
last_updated: "2026-08-09T03:47:15.689Z"
locale: en
meta:
description: "Niche score 63/100 · $94K/yr market · 20K searches/yr. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 63/100 · $94K/yr market · 20K searches/yr. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "300 Gallon Outdoor Storage Box — $94K/yr Amazon US Niche (2026) - Flapen"
---
# **300 gallon outdoor storage box**
**Worth a look**
Shows demand growing +175.2% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 23Growth 97Conversion 29Competition 73Returns 96Price range 0Avg price 46Brand share 76Review moat 58Quality gap 82
**Growth**
**Incredible****+175.2%**
90-day search growth — must beat 0% to launch
**Returns**
**Incredible****0.8%**
return rate — above 5% kills the launch gate
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Great****59%**
top-5 brand share — no brand owns this niche
**Competition**
**Good****41%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Good****1,163.79**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Okay****$203.44**
avg listing price — sweet spot $15–$100
**Conversion**
**Okay****2.4%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****$94K**
$94K/yr · 20K searches
**Price range**
**Bad****$129.26–$268.59**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)") [** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50") [** Out of Stock**](https://flapen.com/research/niches?market=us&signal=out_of_stock "OOS rate > 10%")
According to Flapen's Amazon United States niche tracking, 300 gallon outdoor storage box is a $94K/yr Amazon United States market (20K searches/yr). The top 5 brands hold 59% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Worth a look — 63/100.
Data updated Jul 16, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **300 gallon outdoor storage box market data**
- **Units sold / yr**
- **250–500**
- avg 0–100/product
- **Revenue / yr**
- **$51K–$102K**
- units × avg price
- **Conversion rate**
- **2.4%**
- **Avg BSR**
- **#79**
- **Page quality**
- **0%**
- **Prime**
- **53%**
- **Sponsored**
- **86%**
- **Out of stock**
- **4.4%**
- **Avg brand age**
- **25 months**
- **Avg seller age**
- **187 days**
## **Competition & brand share**
The top 5 products take 41% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**23 **▼falling
**Sellers**
**36**
**Top-5 brand share**
**59%**
Top 20: 98%
**Top-5 click share**
**41%**
Top 20: 74%
**Open market**
**35%**
- TARKARI18% - YITAHOME14% - KFY10% - MAIUSCOLI9% - Greesum8% - DWVO7%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +175.2% search growth over the last 90 days.
1K750Spike '24Holiday '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 3.6×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/300-gallon-outdoor-storage-box/trend)
## **Top 300 gallon outdoor storage box search terms**
- **260 gallon outdoor storage box**5K/yr+265.3%1.7% conv. - **300 gallon outdoor storage box**4K/yr+304.6%1.6% conv. - **180 gallon deck box**5K/yr+144.4%1.3% conv. - **260 gallon deck box**6K/yr+45.6%1.1% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/300-gallon-outdoor-storage-box/search-terms)
## **Top 300 gallon outdoor storage box 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%4%$4K8%$8K12%$11K16%$15K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**TARKARI 320 Gallon Lockable Resin Deck Box Waterproof & UV-Resistant Outdoor Storage Box for Outdoor Cushion Storage Garden Tools & Pool Accessories Storage Black**TARKARI**$255.36**4.3★1,004 rev](https://www.amazon.com/dp/B0DT17G98V) [2**MAIUSCOLI 260 Gallon Outdoor Deck Box Lockable Waterproof Outdoor Storage Boxes For Garden Tools Indoor Cushions Accessories Outside Storage Resin Weatherproof Container(Black)**MAIUSCOLI**$221.27**4.4★1,785 rev](https://www.amazon.com/dp/B0DJLSVPW1) [3**KFY 320 Gallon Waterproof Outdoor Storage Box UV Resistant Resin Deck Box with Hydraulic Rod for Reinforced Stability Perfect for Patio Garden and PoolBlack320 Gallon**KFY**$248.22**4.3★454 rev](https://www.amazon.com/dp/B0FL7CK9BP) [4**Greesum 260 Gallon HDPE Outdoor Storage Box - Waterproof Large Capacity Deck Box with Removable Dividers for Patio Yard Garden Tools Black**Greesum**$253.21**4.5★2,994 rev](https://www.amazon.com/dp/B0F1MWRM69) [5**DRATO 180 Gallon Outdoor Storage Box Large Waterproof Deck Box Lockable Resin Storage Container with Reinforced Support for Patio Cushions Garden Tools UV-Resistant Outdoor ChestBlack180 Gallon**DRATO**$132.17**4.4★805 rev](https://www.amazon.com/dp/B0DX65X8PK)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**ComeWay 260 Gallon Deck Box Waterproof Resin Outdoor Storage Box with Lockable Lid Patio Storage Box with Fade Resistant for Patio Furniture Cushions Pool Accessories Garden Tools Light Coffee**ComeWay**$166.37**83 rev1mo ago](https://www.amazon.com/dp/B0H44WB6WS) [**YITAHOME XXL 300 Gallon Extra Large Outdoor Deck Box Lockable Resin Double-Wall Storage Box and Waterproof Patio Furniture Bin for Garden Tools & Pool Accessories Brown**YITAHOME**$235.95**198 rev1mo ago](https://www.amazon.com/dp/B0H26R3MLJ) [**EFU Outdoor Storage Box 280 Gallon Deck Box (Indoor & Outdoor) Lockable UV Resistance Waterproof Resin Storage Bin Storage Box for Outdoor Patio Storage With Support Rod(Black)**EFU**$209.49**67 rev3mo ago](https://www.amazon.com/dp/B0GTTZTYGC) [**YITAHOME XXL 240 Gallon Extra Large Deck Box Waterproof Resin Outdoor Storage Box with Lock and 3-Person Bench Seating for Patio Furniture Cushions Garden Tools & Pool Accessories Dark Brown**YITAHOME**$166.32**55 rev3mo ago](https://www.amazon.com/dp/B0GTMKQK3J) [**YITAHOME 240 Gallon Large Outdoor Storage Box XXL Resin Deck Box with Lock Extra-Large Waterproof Patio Furniture Bin and 3-Person Bench Seating for Garden Tools & Pool Accessories Black**YITAHOME**$164.96**30 rev3mo ago](https://www.amazon.com/dp/B0GTMD5SX1)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**DWVO 320 Gallon Resin Outdoor Storage Box XXL Large Waterproof Deck Box Doubles as Table or Seating with 1000 lbs Capacity Lockable (Black)**DWVO**$233.53**4.4★**▲ 75%**](https://www.amazon.com/dp/B0DL56V37P) [**ComeWay 260 Gallon Deck Box Waterproof Resin Outdoor Storage Box with Lockable Lid Patio Storage Box with Fade Resistant for Patio Furniture Cushions Pool Accessories Garden Tools Light Coffee**ComeWay**$166.37**4.5★**▲ 75%**](https://www.amazon.com/dp/B0H44WB6WS) [**YITAHOME XXL 300 Gallon Extra Large Outdoor Deck Box Lockable Resin Double-Wall Storage Box and Waterproof Patio Furniture Bin for Garden Tools & Pool Accessories Brown**YITAHOME**$235.95**4.0★**▲ 75%**](https://www.amazon.com/dp/B0H26R3MLJ) [**YITAHOME 240 Gallon Large Outdoor Storage Box XXL Resin Deck Box with Lock Extra-Large Waterproof Patio Furniture Bin and 3-Person Bench Seating for Garden Tools & Pool Accessories Black**YITAHOME**$164.96**2.3★**▲ 74%**](https://www.amazon.com/dp/B0GTMD5SX1) [**EFU Outdoor Storage Box 280 Gallon Deck Box (Indoor & Outdoor) Lockable UV Resistance Waterproof Resin Storage Bin Storage Box for Outdoor Patio Storage With Support Rod(Black)**EFU**$209.49**4.6★**▲ 74%**](https://www.amazon.com/dp/B0GTTZTYGC)
**~~View all trending →~~**
## **What buyers say about 300 gallon outdoor storage box**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Assembly/Installation**21%
*“Assembly was easy”*
**Storage Capacity**14%
*“Lots of space”*
**Quality-Overall**10%
*“is good quality as well as roomy”*
**Strength**8%
*“Sturdy with actual metal in construction”*
**Size-Overall**5%
*“size is great”*
**Value For Money**4%
*“Good price”*
**Durability**3%
*“Very durable”*
**Water Resistance**3%
*“definitely waterproof”*
**Instructions/User Manual/Troubleshooting**2%
*“Clear instructions”*
**Advertised Vs Actual Product**2%
*“As advertised”*
### **What buyers complain about **
**Strength**10%
*“a bit flimsy”*
**Assembly/Installation**10%
*“Partially assembled very poorly”*
**Water Resistance**9%
*“NOT WATERPROOF”*
**Quality-Overall**8%
*“I expected this to be higher quality”*
**Durability**5%
*“Not Durable”*
**Instructions/User Manual/Troubleshooting**5%
*“Instructions are horrible”*
**Size-Overall**5%
*“This box is too small”*
**Leak-Proof**4%
*“Leaks like a sieve”*
**Value For Money**4%
*“Not worth the price”*
**Design-Overall**2%
*“Terrible co structuring”*
### **Top return reasons **
**Defective Material/Parts**27%
**Size-Overall**25%
**Color**8%
**Assembly/Installation**8%
**Material Quality**3%
**Advertised Vs Actual Product**3%
**Value For Money**3%
**Quality-Overall**3%
**Strength**3%
**Product Condition**2%
## **Common questions**
- **Is 300 gallon outdoor storage box profitable to sell on Amazon United States?**
- The niche generates $94K/yr across 43 tracked products. 13 of 19 products launched in the last 360 days are still selling. 90-day search growth is +175.2%. Flapen's verdict: Worth a look (63/100).
- **How competitive is the 300 gallon outdoor storage box niche?**
- 23 brands and 36 sellers compete. The top 5 products take 41% of clicks and top 5 brands hold 59% of demand.
- **What do buyers complain about in 300 gallon outdoor storage box?**
- Top complaints mined from reviews: Strength, Assembly/Installation, Water Resistance. The return rate is 0.8%.
- **When does demand for 300 gallon outdoor storage box peak?**
- Demand peaks in Apr–May–Jun–Jul; the busiest month runs 3.6× the quietest.
- **What does it cost to enter the 300 gallon outdoor storage box niche?**
- Listings span $129.26–$268.59; the average listing price is $203.44 (sweet spot $15–$100). The average incumbent carries 1,164 reviews — the moat a new listing must climb.
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