Is bullfrog spa filter profitable to sell on Amazon United States?

The niche generates $127K/yr across 20 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is +9.8%. Flapen's verdict: Worth a look (57/100).

How competitive is the bullfrog spa filter niche?

14 brands and 17 sellers compete. The top 5 products take 58% of clicks and top 5 brands hold 74% of demand.

What do buyers complain about in bullfrog spa filter?

Top complaints mined from reviews: Durability, Size-Overall, Filtration. The return rate is 2.1%.

When does demand for bullfrog spa filter peak?

Demand peaks in Oct–Nov; the busiest month runs 1.8× the quietest.

What does it cost to enter the bullfrog spa filter niche?

Listings span $27.86–$71.73; the average listing price is $42.83 (sweet spot $15–$100). The average incumbent carries 77 reviews — the moat a new listing must climb.

bullfrog spa filter

Worth a look

Shows a thin review moat (77 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Review moat

Incredible76.85

avg incumbent reviews — the moat a new listing must climb

Avg price

Incredible$42.83

avg listing price — sweet spot $15–$100

Price range

Incredible$27.86–$71.73

cheapest to priciest tracked listing — scored on the share inside $15–$100

Conversion

Great9.1%

search→purchase rate — share of searches ending in a sale

Returns

Good2.1%

return rate — above 5% kills the launch gate

Brand share

Good74%

top-5 brand share — brands hold most of the demand

Quality gap

Good4.5★

avg incumbent rating — lower means beatable quality

Competition

Okay58%

top-5 click share — leaders hold, buyers still browse

Growth

Okay+9.8%

90-day search growth — must beat 0% to launch

Market size

Okay$127K

$127K/yr · 33K searches

Signals Low Review Barrier

According to Flapen's Amazon United States niche tracking, bullfrog spa filter is a $127K/yr Amazon United States market (33K searches/yr). The top 5 brands hold 74% of demand. Demand peaks in Oct–Nov. Verdict: Worth a look — 57/100.

Data updated Jul 24, 2026 · scored weekly · How we score niches

bullfrog spa filter market data

Units sold / yr: 3K–4K; avg 100–250/product
Revenue / yr: $128K–$171K; units × avg price
Conversion rate: 9.1%
Avg BSR: #634
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 14.1%
Avg brand age: 26 months
Avg seller age: 229 days

Competition & brand share

The top 5 products take 58% of clicks — established leaders, but buyers still shop beyond them.

Brands

14 flat

Sellers

Top-5 brand share

74%

Top 20: 100%

Top-5 click share

58%

Top 20: 100%

Open market

20%

Vickmons25%
Macaberry24%
Beckacher10%
Grefilt8%
Hot Tub Things6%
Havuzpas6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +9.8% search growth over the last 90 days.

Peak months: Oct, Nov · busiest ÷ quietest = 1.8×

Open Trend

Top bullfrog spa filter search terms

bullfrog spa filter19K/yr +7.8%9.9% conv.
wellspring 10-00282 bullfrog filter6K/yr +1.0%11.7% conv.
bullfrog hot tub filters5K/yr +12.7%8.9% conv.
bullfrog spa filters3K/yr +47.5%8.6% conv.

All search terms

Top bullfrog spa filter 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 20 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Macaberry PBF40M Spa Hot Tub Filter Replacement Compatible with Pleatco PBF40M Bullfrog Spas Wellspring 30 Coreless 10-00282. 2 Pack

Macaberry$39.414.3★185 rev

Vickmons 10-00814 Hot Tub Spa Flat Filters Compatible with Bullfrog M Series M6 M7 M8 M9 Swim Series S150 S180XD S200 and A Series A5 A6 A7 A8 A9 (2023 to Present) Pack of 4

Vickmons$39.184.6★64 rev

Vickmons 2 Pack PBF40M Spa Hot Tub Filter Replacement Compatible with Pleatco PBF40M Bull Frog Spas Wellspring 30 Coreless 10-00282

Vickmons$38.774.1★192 rev

Grefilt 10-00282 Hot Tub Filter Compatible with Bullfrog Spa Filter Wellspring 30 Coreless 10-00282 Pleatco PBF40M 30 sq.ft. 2-Pack

Grefilt$38.744.6★47 rev

Beckacher 10-00814 Hot Tub Spa Flat Filters Compatible with Bullfrog M Series M6 M7 M8 M9 A Series A5 A6 A7 A8 A9 (2023 to Present) and Swim Series S150 S180XD S200-4 Pack

Beckacher$34.484.5★46 rev

Newest

by launch date

TALANDO 2-Pack 10-00282 Hot Tub Filter Compatible with Bullfrog Spa Filter Wellspring 30 Coreless 10-00282 Pleatco PBF40M 30 sq.ft.

TALANDO$28.3917 rev

5mo ago

ZUJAR PBF40 Spa Hot Tub Filter Replacement Compatible with Pleatco PBF40M Bullfrog Spas Wellspring 30 Coreless 10-00282. 2 Pack

ZUJAR$28.679 rev

5mo ago

AmiBron 8CH-950 Bullfrog Spa Filter Compatible with PBF35 PBF50-F2S 10-2785 FC-0536 XLS-834 15052 AK-90311 2 SAE Thread Bullfrog Hot Tub Filter 2PACK

AmiBron$48.982 rev

9mo ago

Macaberry PBF40M Spa Hot Tub Filter Replacement Compatible with Pleatco PBF40M Bullfrog Spas Wellspring 30 Coreless 10-00282. 4 Pack

Macaberry$71.73185 rev

10mo ago

Grefilt 10-00282 Hot Tub Filter Compatible with Bullfrog Spa Filter Wellspring 30 Coreless 10-00282 Pleatco PBF40M 30 sq.ft. 2-Pack

Grefilt$38.7447 rev

1y ago

What buyers say about bullfrog spa filter

What buyers praise and complain about, mined from review topics.

What buyers love

Size-Overall38%

“Fit as expected”

Filtration17%

“Quality Filters”

Value For Money15%

“Great Value”

Quality-Overall11%

“These filters seem to be of good quality”

Assembly/Installation3%

“Easy to use and install”

Ease Of Use2%

“Easy to use”

Advertised Vs Actual Product2%

“Works as described”

Durability2%

“The quality feels durable”

Ease Of Cleaning2%

“keep things clean without rushing”

Material Quality1%

“The material feels sturdy”

What buyers complain about

Durability20%

“These are not durable at all”

Size-Overall18%

“Didnt fit”

Filtration15%

“Filters are thin”

Quality-Overall8%

“if you like the higher quality, expensive filters, these dont come close in comparison”

Ease Of Cleaning6%

“don't really clean very well”

Material Quality5%

“Weird material that doesn't really filter”

Strength3%

“seem to fall apart”

Advertised Vs Actual Product3%

“In spite of what the listing says”

Thickness2%

“They dont feel as dense as the OEM”

Weight Heavy2%

“Not quite as hefty as the originals”

Top return reasons

Size-Overall50%

Filtration31%

Advertised Vs Actual Product11%

Value For Money1%

Shape/Style1%

Functionality-Overall1%

Add-Ons/Attachments1%

Quality-Overall1%

Thin1%

Defective Material/Parts1%

Common questions

Is bullfrog spa filter profitable to sell on Amazon United States?: The niche generates $127K/yr across 20 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is +9.8%. Flapen's verdict: Worth a look (57/100).
How competitive is the bullfrog spa filter niche?: 14 brands and 17 sellers compete. The top 5 products take 58% of clicks and top 5 brands hold 74% of demand.
What do buyers complain about in bullfrog spa filter?: Top complaints mined from reviews: Durability, Size-Overall, Filtration. The return rate is 2.1%.
When does demand for bullfrog spa filter peak?: Demand peaks in Oct–Nov; the busiest month runs 1.8× the quietest.
What does it cost to enter the bullfrog spa filter niche?: Listings span $27.86–$71.73; the average listing price is $42.83 (sweet spot $15–$100). The average incumbent carries 77 reviews — the moat a new listing must climb.