Is dr browns straw cup conversion kit profitable to sell on Amazon United States?

The niche generates $75K/yr across 23 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -5.3%. Flapen's verdict: Skip it (35/100).

How competitive is the dr browns straw cup conversion kit niche?

7 brands and 19 sellers compete. The top 5 products take 56% of clicks and top 5 brands hold 97% of demand.

What do buyers complain about in dr browns straw cup conversion kit?

Top complaints mined from reviews: Leak-Proof, Ease Of Cleaning, Ease Of Use. The return rate is 2.4%.

When does demand for dr browns straw cup conversion kit peak?

Demand peaks in Jan–Feb–Mar; the busiest month runs 8.2× the quietest.

What does it cost to enter the dr browns straw cup conversion kit niche?

Listings span $5.52–$17.82; the average listing price is $10.57 (sweet spot $15–$100). The average incumbent carries 5,495 reviews — the moat a new listing must climb.

dr browns straw cup conversion kit

Skip it

Brand-locked demand (top 5 brands take 97% of clicks) — this niche doesn't clear our bar today.

Conversion

Good6.6%

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

Returns

Good2.4%

return rate — above 5% kills the launch gate

Competition

Okay56%

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

Avg price

Okay$10.57

avg listing price — sweet spot $15–$100

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Review moat

Bad5,494.57

avg incumbent reviews — the moat a new listing must climb

Price range

Bad$5.52–$17.82

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

Growth

Bad-5.3%

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

Market size

Bad$75K

$75K/yr · 108K searches

Brand share

Bad97%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, dr browns straw cup conversion kit is a $75K/yr Amazon United States market (108K searches/yr). The top 5 brands hold 97% of demand. Demand peaks in Jan–Feb–Mar. Verdict: Skip it — 35/100.

Data updated Jul 12, 2026 · scored weekly · How we score niches

dr browns straw cup conversion kit market data

Units sold / yr: 6K–8K; avg 250–500/product
Revenue / yr: $63K–$85K; units × avg price
Conversion rate: 6.6%
Avg BSR: #58
Page quality: 0%
Prime: 100%
Sponsored: 65%
Out of stock: 2.7%
Avg brand age: 40 months
Avg seller age: 129 days

Competition & brand share

The top 5 products take 56% of clicks — established leaders, but buyers still shop beyond them.

Brands

7 rising

Sellers

Top-5 brand share

97%

Top 20: 100%

Top-5 click share

56%

Top 20: 96%

Open market

Dr. Brown's86%
Nuby4%
Disney2%
BUSOHA2%
BULGILIA2%
NUK2%
Open — no brand owns it (1 brand, 1%)

Demand & seasonality

Weekly Amazon search volume, last 101 weeks — -5.3% search growth over the last 90 days.

Peak months: Jan, Feb, Mar · busiest ÷ quietest = 8.2×

Open Trend

Top dr browns straw cup conversion kit search terms

dr brown sippy bottle17K/yr +7.8%7.5% conv.
dr brown transitional bottle18K/yr -5.9%8.3% conv.
baby bottles with handles17K/yr +0.4%1.7% conv.
baby bottle with handles17K/yr -11.7%2.2% conv.
dr browns transitional bottle14K/yr -12.4%9.1% conv.
dr browns sippy bottle10K/yr -8.4%6.5% conv.
bottle with handles6K/yr -8.6%3.1% conv.
dr brown toddler bottle6K/yr -10.0%6.5% conv.
bottles with handles5K/yr -13.1%2.6% conv.

All search terms

Top dr browns straw cup conversion kit 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 23 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Dr. Browns Milestones Narrow Sippy Spout Bottle with 100% Silicone Easy-Grip Handles and Soft Sippy Spout 8oz/250mL Light Pink and Ecru 2-Pack 6m+

Dr. Brown's$9.794.7★10,141 rev

Dr. Browns Milestones Narrow Sippy Spout Bottle with 100% Silicone Easy-Grip Handles and Soft Sippy Spout 8oz/250mL Light-Blue and Gray 2-Pack 6m+

Dr. Brown's$11.694.7★10,141 rev

Dr. Browns Milestones Wide-Neck Sippy Spout Bottle with Silicone Handles 9oz 270mL 6m+ Light Blue and Gray 2-Pack

Dr. Brown's$13.644.7★1,431 rev

Dr. Browns Milestones Narrow Sippy Straw Bottle Spill-Proof with 100% Silicone Handles and Weighted Straw 8 oz/250 mL Blue/Gray 6m+

Dr. Brown's$12.174.3★2,116 rev

Dr. Browns Milestones Narrow Sippy Straw Bottle Spill-Proof with 100% Silicone Handles and Weighted Straw 8 oz/250 mL Gray/Pink 6m+

Dr. Brown's$10.864.5★4,758 rev

Newest

by launch date

NUK First Choice Large Learner Cup 2.0 10 oz. Sippy Cup with Handles Spill Proof Leak Proof Soft Straw Cup 2-Pack

NUK$13.1114,495 rev

5mo ago

Dr. Browns Preemie Flow Bottle Set Anti-Colic Options+ Baby Bottles with Preemie Flow and Level T Nipples 4oz/120mL 0m+ 3 Pack

Dr. Brown's$17.82239 rev

1y ago

BUSOHA 3 Pack Silicone Sleeves for Avent Baby Bottles - Anti Breakage Baby Bottle Holder with Handle Compatible with Avent Natural Glass Baby Bottles 8 OZ

BUSOHA$9.94546 rev

1y ago

BULGILIA (4 Pack Bottles Handles for Philips Avent Natural Baby Bottle Quick Install & Easy for Little Hands to Hold White

BULGILIA$6.96259 rev

2y ago

Dr. Browns Milestones Babys First Straw Cup Training Cup with Weighted Straw 9 oz/270 mL BPA-free 6m+ Dark Blue 1-Pack

Dr. Brown's$5.5214,879 rev

3y ago

What buyers say about dr browns straw cup conversion kit

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

What buyers love

Leak-Proof19%

“no leaking”

Ease Of Use12%

“Easy Peasy”

Quality-Overall9%

“Great quality cup”

Ease Of Cleaning9%

“keep it clean”

Size-Overall7%

“The size is also convenient”

Handle Quality5%

“It is nice to have the choice of using the handles”

Value For Money4%

“Worth it”

Ease Of Feeding4%

“Great for independent feeding”

Durability3%

“still in great condition”

Design-Overall2%

“Great design”

What buyers complain about

Leak-Proof21%

“It leaks everywhere”

Ease Of Cleaning11%

“Hard to clean”

Ease Of Use8%

“But, its very difficult to use”

Functionality-Overall6%

“not working properly”

Quality-Overall5%

“Made cheap”

Size-Overall4%

“The size is basically a short”

Durability3%

“But Not Durable”

Washability2%

“its some complicated to wash and to ensamble”

Water Resistance2%

“The water is not drinkable”

Choking2%

“just choked when feeding”

Top return reasons

Size-Overall23%

Leak-Proof17%

Functionality-Overall12%

Advertised Vs Actual Product6%

Ease Of Use5%

Handle Quality5%

Age Suitability5%

Material Quality3%

Defective Material/Parts3%

Value For Money3%

Common questions

Is dr browns straw cup conversion kit profitable to sell on Amazon United States?: The niche generates $75K/yr across 23 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -5.3%. Flapen's verdict: Skip it (35/100).
How competitive is the dr browns straw cup conversion kit niche?: 7 brands and 19 sellers compete. The top 5 products take 56% of clicks and top 5 brands hold 97% of demand.
What do buyers complain about in dr browns straw cup conversion kit?: Top complaints mined from reviews: Leak-Proof, Ease Of Cleaning, Ease Of Use. The return rate is 2.4%.
When does demand for dr browns straw cup conversion kit peak?: Demand peaks in Jan–Feb–Mar; the busiest month runs 8.2× the quietest.
What does it cost to enter the dr browns straw cup conversion kit niche?: Listings span $5.52–$17.82; the average listing price is $10.57 (sweet spot $15–$100). The average incumbent carries 5,495 reviews — the moat a new listing must climb.