polaris 3900 bag
Worth a lookShows searches that convert (13.5% search→purchase), but a small market ($12K/yr) keeps it on the watch list.
Conversion
Incredible13.5%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.9%return rate — above 5% kills the launch gate
Avg price
Incredible$23.06avg listing price — sweet spot $15–$100
Price range
Great$12.73–$47.35cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great325.5avg incumbent reviews — the moat a new listing must climb
Growth
Good+31.2%90-day search growth — must beat 0% to launch
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Brand share
Bad90%top-5 brand share — brand-locked demand
Competition
Bad78%top-5 click share — a locked-up shelf
Market size
Bad$12K$12K/yr · 4K searches
According to Flapen's Amazon United States niche tracking, polaris 3900 bag is a $12K/yr Amazon United States market (4K searches/yr). The top 5 brands hold 90% of demand. Demand peaks in Apr–May–Jun–Aug. Verdict: Worth a look — 52/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
polaris 3900 bag market data
- Units sold / yr
- 750–1K
- avg 0–100/product
- Revenue / yr
- $17K–$23K
- units × avg price
- Conversion rate
- 13.5%
- Avg BSR
- #527
- Page quality
- 0%
- Prime
- 90%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 67 months
- Avg seller age
- 220 days
Competition & brand share
The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.Brands
7 rising
Sellers
30
Top-5 brand share
90%
Top 20: 100%
Top-5 click share
78%
Top 20: 100%
Open market
4%
- UCEDER25%
- ATIE23%
- Polaris18%
- MUSCCCM18%
- PGFUN6%
- Podoy5%
- Open — no brand owns it (1 brand, 4%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +31.2% search growth over the last 90 days.Peak months: Apr, May, Jun, Aug · busiest ÷ quietest = 3.5×
Top polaris 3900 bag 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 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
UCEDER 3900 Double Pool Cleaner Replacement Bag with Zipper Enclosure
UCEDER$19.704.5★83 rev
ATIE 3900 Sport P39 Pool Cleaner Double Chamber All Purpose SuperBag 39-310 with Zipper Enlosure Replacement Compatible with 3900 Sport and P39 Pool Cleaners (2 Pack)
ATIE$20.304.3★483 rev
MUSCCCM 3900 Sport Double Chamber Design 39-310 Pool Cleaner Bags
MUSCCCM$18.884.2★86 rev
Polaris Genuine Parts Bundle - Superbag 39-310 & (2) Sweep Hose Scrubbers 9-100-3105 for Polaris 3900 Sport P39
Polaris$47.355.0★6 rev
PGFUN 2 Pack 3900 Sport and P39 Pool Cleaner Bags Double Chamber Pull-Tape Design
PGFUN$19.744.2★85 rev
Newest
by launch date
Chuanke 3900 Pool Cleaner Bag for 3900 Sport 39-310 Double Space All Purpose Filter Bag with Zipper SuperBag Accommodate 5 Liters Capacity Compatible with 3900 P39 480 280 Pool Cleaners (2 Pack)
Chuanke$19.478 rev
UCEDER 3900 Double Pool Cleaner Replacement Bag with Zipper Enclosure
UCEDER$19.7083 rev
UCEDER 3900 Double Pool Cleaner Replacement Bag with Zipper Enclosure
UCEDER$12.7383 rev
MUSCCCM 3900 Sport Double Chamber Design 39-310 Pool Cleaner Bags
MUSCCCM$18.8886 rev
PGFUN 2 Pack 3900 Sport and P39 Pool Cleaner Bags Double Chamber Pull-Tape Design
PGFUN$19.7485 rev
Trending
90-day click momentumChuanke 3900 Pool Cleaner Bag for 3900 Sport 39-310 Double Space All Purpose Filter Bag with Zipper SuperBag Accommodate 5 Liters Capacity Compatible with 3900 P39 480 280 Pool Cleaners (2 Pack)
Chuanke$19.474.6★
3900 Sport P39 Pool Cleaner Bag Compatible with Polaris 3900 Pool Cleaner 39-310 Zipper Bag Accommodate 5 Liters Capacity with 9-100-3105 Sweep Hose Scrubber by Podoy
Podoy$14.314.3★
Polaris Genuine Parts Bundle - Superbag 39-310 & (2) Sweep Hose Scrubbers 9-100-3105 for Polaris 3900 Sport P39
Polaris$47.355.0★
UCEDER 3900 Double Pool Cleaner Replacement Bag with Zipper Enclosure
UCEDER$19.704.5★
ATIE 3900 Sport P39 Pool Cleaner Double Chamber All Purpose SuperBag 39-310 with Zipper Enlosure Replacement Compatible with 3900 Sport and P39 Pool Cleaners (2 Pack)
ATIE$20.304.3★
What buyers say about polaris 3900 bag
What buyers praise and complain about, mined from review topics.What buyers love
“Very good value for money”
“help maintain your pool cleaner's efficiency”
“Fits well”
“Good quality”
“They are super durable”
“Easy to install”
“Well made and sturdy”
“Easy to use”
“Large capacity”
“The material feels durable”
What buyers complain about
“hard to remove from cleaner and zipper failure”
“The adapter of these bags is very loose”
“Two strikes, not worth going the cheap route this time”
“Didnt hold up over time”
“More of a design issue I have to deal with”
“The zippers would be very difficult to operate”
“know that the brands original bags are usually quite expensive”
“Not effective”
“These are still hard”
Top return reasons
Common questions
- Is polaris 3900 bag profitable to sell on Amazon United States?
- The niche generates $12K/yr across 10 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +31.2%. Flapen's verdict: Worth a look (52/100).
- How competitive is the polaris 3900 bag niche?
- 7 brands and 30 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 90% of demand.
- What do buyers complain about in polaris 3900 bag?
- Top complaints mined from reviews: Ease Of Cleaning, Size-Overall, Quality-Overall. The return rate is 0.9%.
- When does demand for polaris 3900 bag peak?
- Demand peaks in Apr–May–Jun–Aug; the busiest month runs 3.5× the quietest.
- What does it cost to enter the polaris 3900 bag niche?
- Listings span $12.73–$47.35; the average listing price is $23.06 (sweet spot $15–$100). The average incumbent carries 326 reviews — the moat a new listing must climb.